PEM® brand fasteners that utilize,
surface-mount, broaching and flaring
technology for use with PC boards
K™
FASTENERS FOR
USE WITH PC BOARDS
FASTENERS FOR USE WITH PC BOARDS
No matter how sophisticated or advanced, electronic components must be attached reliably and securely if they are
to deliver optimum performance. We offer several fastener products for use with PC boards to satisfy component-toboard, board-to-board, and board-to-chassis attachment needs.
ReelFast® surface mount fasteners mount on PC boards in the same manner and at the same time as other surface
mount components prior to the automated reflow solder process. The fasteners simply become another board
component. This alleviates concerns about potential damage to PC boards due to improper secondary installation
operations. The fasteners are provided on tape and reel compatible with existing SMT automated installation
equipment. The benefits of using ReelFast® SMT fasteners are: faster assembly; reduced scrap; reduced handling; and
reduced risk of board damage.
Broaching fasteners can also offer practical alternatives to “loose” hardware. A broaching fastener is a knurled-shank
fastening device that can be pressed into a hole to provide a permanent, strong, threaded or unthreaded attachment
point in PC boards. They can also be used in aluminum, acrylic, casting and polycarbonate components. Specially
formed axial grooves around the shank of the fastener “broach” or cut into the material, creating a firm, interferencetype fit resistant to rotation. In PC boards, broaching fasteners are recommended for use in non-plated holes.
Broach/flare-mount standoffs (KFB3™) offer a combined broach/flare feature for even greater pullout performance
in PC board materials.
NUTS AND SPACERS/STANDOFFS
SMTSO™/SMTSOB™ - ReelFast® surface mount
nuts and standoffs are available threaded and
unthreaded - PAGE 4
PFK™ - Broaching panel fastener assemblies for
mounting on PC boards - PAGE 12
STUDS
SMTSS™ - ReelFast® SNAP-TOP® standoffs
feature a spring action to hold PC board securely
without screws or threaded hardware - PAGE 5
KFH™ - Threaded broaching studs for use
as solderable connectors or as permanently
mounted studs on PC boards - PAGE 12
SMTSK™ - NEW ReelFast® KEYHOLE® standoffs
eliminate the need for attaching screws - PAGE 6
RIGHT ANGLE FASTENERS
KF2™/KFS2™ - Broaching nuts, internally
threaded for mounting on PC boards - PAGE 7
SMTRA™ - ReelFast® R’ANGLE® surface mount
fasteners provide strong re-usable threads at
right angles to PC boards - PAGE 13
KFE™/KFSE™ - Broaching standoffs, threaded or
unthreaded for stacking or spacing - PAGE 8
SHEET JOINING FASTENERS
KFB3™ - Broach/flare-mount standoffs with
greater pullout performance - PAGE 8
SFK™ - SpotFast® clinch/broach mount fasteners
for joining metal to PCB/plastic panels PAGE 14
KSSB™ - Broaching, SNAP-TOP® standoffs
feature a spring action to hold PC board securely
without screws or threaded hardware - PAGE 9
MATERIAL AND FINISH SPECIFICATIONS PAGE 15
CAPTIVE PANEL SCREWS
INSTALLATION PAGES 16-19
SMTPFLSM™ - ReelFast® surface mount springloaded captive panel screws - PAGE 10
PERFORMANCE DATA PAGES 20-22
SMTPF™ - ReelFast® surface mount captive panel
screws - PAGE 11
OTHER FASTENERS FOR USE WITH PC BOARDS PAGE 23
K-2 PennEngineering • www.pemnet.com
© 2021 PennEngineering.
FASTENERS FOR USE WITH PC BOARDS
QUICK REFERENCE CHART
Primary Use
Mounting Types
PEM®
Fastener
SMTSO/SMTSOB
Page
No.
Broach
Broach/
Flare
Surface
Mount
Clinch/
Broach
Nut
Spacer/
Snap
Standoff Attachment Stud
4
•
SMTSS
5
•
•
SMTSK
6
•
•
KF2/KFS2
7
•
KFE/KFSE
8
•
KFB3
8
KSSB
9
•
•
Right
Sheet to
Captive Color
Angle
Sheet
Screw Coding Attachment Joining
•
•
•
•
•
•
•
•
SMTPFLSM
10
•
•
SMTPF
11
•
•
PFK
12
•
KFH
12
•
SMTRA
SFK
13
14
PEM® Dimple
(Registered Trademark)
•
•
•
•
•
•
•
PEM® TRADEMARKS
PEM® “Two Groove”
(Registered
Trademark)
PEM® Double Notch
(Registered Trademark)
PEM® Blue
Nylon Ring
(Trademark)
To be sure that you are getting genuine PEM® brand fasteners, look for the unique PEM® product markings and identifiers.
Fastener drawings
and models are
available at
www.pemnet.com
PennEngineering • www.pemnet.com K-3
FASTENERS FOR USE WITH PC BOARDS
SMTSO™/SMTSOB™ ReelFast® SURFACE MOUNT NUTS AND SPACERS/STANDOFFS
SMTSO/SMTSOB
C
C
A
E
PEM® “Two Groove”
(Registered Trademark)
SMTSOB(1)
PEM® “Two Groove”
(Registered Trademark)
L
A
E
PART NUMBER DESIGNATION
SMTSO –
440 – 8
ET
SMTSOB – 440 – 8
ET
L
Length
Code
Thread or
Thru Hole
Code
Type and
Material
Finish
Thread/thru hole sizes 2-56, 4-40, 6-32, 8-32, 116, 143, M2, M2.5, M3, M3.5, M4, 3.1, 3.6, and 4.2
microPEM® SMTSO NUTS
E
ØD
Stencil Masking Examples
PEM® Double Notch
(Registered Trademark)
Metric -1 length not marked
Solder
Pad
Mounting hole
does not need to be
plated through.
C
ØH
H
UNIFIED
All dimensions are in inches.
Thru
Thread
Hole
Size
+.004 –.003
.060-80
—
(#0-80)
.086-56
—
(#2-56)
.112-40
—
(#4-40)
.138-32
—
(#6-32)
.164-32
—
(#8-32)
—
.116
—
.143
L
A
NOTE: Standoffs are available on special order without a pilot that do not require
a thru hole for installation. Contact techsupport@pemnet.com for more information
Thread sizes 080, S1, S1.2, S1.4 and M1.6
Type
Length Code “L” ±.005
Thread or
(Length code in 32nds of an inch)
Fastener Material
Thru Hole
Steel Brass Code .062 .125 .250 .375
SMTSO —
080
Min.
E
Sheet
A
C
H
Thickness
Max.
Max.
Ref. ±.005 Nom.
ØH Hole Size
In Sheet
+.003 –.000
ØD
Min. Solder
Pad
2 4 — — .020 .019 .095 .144 .125
.098
.165
SMTSO SMTSOB 256
2 4 8 (1) 12 (1) .060 .060 .142 —
.219 —
.147
.244
SMTSO SMTSOB 440
2 4 8 (1) 12 (1) .060
.060 .161 — .219 —
.166
.244
SMTSO SMTSOB 632
2 4 8 (1) 12 (1) .060
.060 .208 — .281 —
.213
.306
SMTSO SMTSOB 832
2 4 8 (1) 12 (1) .060
.060 .245 — .344 —
.250
.369
SMTSO SMTSOB 116
SMTSO SMTSOB 143
2
2
.060 .161 — .219 —
.060 .208 — .281 —
.166
.213
.244
.306
4
4
8
8
12
12
.060
.060
All dimensions are in millimeters.
METRIC
Type
Thread
Thru Hole
Thread or
Min.
E
ØH Hole Size
ØD
Length Code “L” ±0.13
Size x
+0.10
Fastener Material Thru Hole
Sheet
A
C
H
In Sheet
Min. Solder
(Length code in millimeters)
Pitch –0.08 Steel Brass Code
Thickness
Max.
Max.
Ref.
±0.13
Nom. +0.08 Pad
S1
— SMTSO — M1 1 2 3 — — — — 0.5 0.48 2.41 3.66 — 3.18 2.5
4.19
S1.2
— SMTSO —
M1.2 1 2 3 — — — — 0.5 0.48 2.41 3.66 — 3.18
2.5
S1.4
— SMTSO —
M1.4 1 2 3 — — — — 0.5 0.48 2.41 3.66 — 3.18
2.5
4.19
M1.6 x 0.35
—
M1.6
2.5
4.19
6.2
SMTSO
—
1
2
3
—
—
—
—
0.5
0.48
2.41
3.66
—
3.18
4.19
—
SMTSO
SMTSOB
M2
—
2
3
4 (1) 6 (1) 8 (1) 10 (1) 1.53 1.53 3.6 — 5.56 —
3.73
M2.5 x 0.45
—
SMTSO
SMTSOB
M25
—
2
3
4 (1) 6 (1) 8 (1) 10 (1) 1.53 1.53 4.09 — 5.56 —
4.22
6.2
—
SMTSO
SMTSOB
M3
—
2
3
4 (1) 6 (1) 8 (1) 10 (1) 1.53 1.53 4.09 — 5.56 —
4.22
6.2
4 (1) 6 (1) 8 (1) 10 (1) 1.53 1.53 5.28 — 7.14 —
5.41
7.77
6 (1) 8 (1) 10 (1) 1.53 1.53 6.22 — 8.74 —
6.35
9.37
M2 x 0.4
M3 x 0.5
M3.5 x 0.6
—
SMTSO
SMTSOB
M35
—
2
3
—
SMTSO
SMTSOB
M4
—
2
3
M4 x 0.7
4
—
3.1 SMTSO SMTSOB 3.1 — 2 3 4 6 8 10 1.53 1.53 4.09 — 5.56 —
4.22
6.2
—
3.6 SMTSO
SMTSOB 3.6 — 2 3 4 6 8 10 1.53 1.53 5.28 — 7.14 —
5.41
7.77
—
4.2 SMTSO SMTSOB 4.2 — 2 3 4 6 8 10 1.53 1.53 6.22 — 8.74 —
6.35
9.37
(1) SMTSOB fasteners with this length code have a shank counterbore.
NUMBER OF PARTS PER REEL / PITCH (MM) FOR EACH SIZE
Length Code
Thread/Thru-Hole
Size
1 2 3 4 6 8 10 12
080
—
3500 / 8
—
2000 / 8
—
—
—
—
256, 440, 632, 116, 143
—
1500 / 12
—
1000 / 12
—
650 / 12
—
300 / 16
832
—
1100 / 16
—
800 / 16
—
500 / 16
—
300 / 16
M1, M1.2, M1.4, M1.6
3500 / 8
2500 / 8
2000 / 8
—
—
—
—
—
M2, M25, M3, M35, 3.1, 3.6
—
1500 / 12
1000 / 12
900 / 12
650 / 12
375 / 16
300 / 16
—
M4, 4.2
—
1100 / 16
800 / 16
675 / 16
500 / 16
375 / 16
300 / 16
—
Packaged on 330 mm recyclable reels. Tape width is 24 mm. Reels conform to EIA-481.
K-4 PennEngineering • www.pemnet.com
A polyimide patch is supplied to
allow for reliable vacuum pickup.
Fasteners are also available without
a patch which may provide a lower
cost alternative, depending on your
installation methods/requirements.
FASTENERS FOR USE WITH PC BOARDS
SMTSS™ REELFAST® SNAP-TOP® STANDOFFS
NOTE: REELFAST® SNAP-TOP®
SMTSS™ standoffs are for ononly applications. For removal
applications, mounting hole A can be
increased to reduce removal force.
E
P
L
A
B
ØD
Mounting hole
does not need to be
plated through.
C
ØH
PEM® “dimple” registered trademark.
Stencil Masking Examples
PART NUMBER DESIGNATION
SMTSS S – 156 – 12 ET
Type Material
UNIFIED
All dimensions are in inches.
Solder
Pad
Length Finish
Top Board
Mounting Hole A Code
Diameter Code
Length Code “L” ±.005
Top Board
Min.
ØH Hole
ØD
(Length Code in 32nds of an inch)
Mounting Hole A Type and
Sheet
A
C
E
B
P
Size in Sheet
Min.
Diameter Code
Material
Thickness
Max.
Max.
±.005
±.005
±.005
+.003 –.000
Solder Pad
.250 .375
156 SMTSSS 8
12
.060
.060 .161 .250 .188
.141
.166
.276
METRIC
All dimensions are in millimeters.
Top Board Min.
ØH Hole
ØD
Length Code “L” ±0.13
Mounting Hole A Type and
Sheet
A
C
E
B
P
Size in Sheet
Min.
(Length
Code in
millimeters)
Diameter Code
Material
Thickness Max. Max. ±0.13 ±0.13 ±0.13 +0.08 Solder Pad
4MM SMTSSS 6
8
10
1.53
1.53
4.09 6.35
4.8
3.58
4.22
7
NUMBER OF PARTS PER REEL
Type, Material and Size
Length Code / Number of Parts per Reel
SMTSSS-156 -8 / 280
SMTSSS-4MM
-6 / 300
-12 / 220
-8 / 250 -10 / 200
Packaged on 330 mm recyclable reels. Tape width is 24 mm.
Supplied with polyimide patch for vacuum pick up. Reels conform to EIA-481.
SMTSS™ APPLICATION DATA
Edge
C
Mounting Hole A
PANEL 2 (TOP)
PANEL 1 (BOTTOM)
Mounting Hole B
All dimensions are in inches.
Location Tolerance
UNIFIED
Panel 1
Panel 2
Type
Hardness
Max.
Bottom
Mounting
Hole B
+.003 -.000
Panel
Material
Thickness
Min.
Location
Tolerance
Hardness
Max.
Top
Mounting
Hole A
+.003 -.000
Panel
Material
Thickness
Range
Edge
Distance
C Min.
SMTSS
No Limit
.166
PC board
.060
±.005
No Limit
.156
PC board or Metal
.040 - .070
.100
All dimensions are in millimeters.
METRIC
Panel 1
Panel 2
Type
Hardness
Max.
Bottom
Mounting
Hole B
+0.08
Panel
Material
Thickness
Min.
Location
Tolerance
Hardness
Max.
Top
Mounting
Hole A
+0.08
Panel
Material
Thickness
Range
Edge
Distance
C Min.
SMTSS
No Limit
4.22
PC board
1.53
±0.13
No Limit
4
PC board or Metal
1 - 1.8
2.54
PennEngineering • www.pemnet.com K-5
FASTENERS FOR USE WITH PC BOARDS
NEW
SMTSK™ REELFAST® KEYHOLE® STANDOFFS
• Unique barrel design allows
for quick attachment and
detachment.
• Makes horizontal or vertical
component mounting possible.
M
L
B
ØD
C
P
R
E
Solder
Pad
Mounting hole
does not need to be
plated through.
PEM® “dimple”
registered trademark.
ØH
PART NUMBER DESIGNATION
SMTSK - 6
060 - 12
ET
Type
All dimensions are in inches.
UNIFIED
A
S
Body
Sheet
Length
Size Code Thickness Code
Stencil Masking Examples
Finish
Length “L” ± .005
ØH ØD
Type
Body Size -
(Length Code in 32nds of an inch)
Min.
A
C
E
B
P
R
S
M
Hole Size
Min.
Sheet Code
Sheet Max. Max. ±.005 ±.003 ±.003 Max. ±.003 Max. in Sheet Solder
.125 .250 .375
Thickness
+.003 -.000
Pad
SMTSK 6060
4
8
12
.060 .060 .161 .250 .177 .099 .212 .068 .108 .166 .276
METRIC
All dimensions are in millimeters.
ØH ØD
Length “L” ± 0.13
Type
Body Size -
Min.
A
C
E
B
P
R
S
M
Hole Size
Min.
(Length Code in millimeters)
Sheet Code
Sheet Max. Max. ±0.13 ±.0.08 ±0.08 Max. ±0.08 Max. in Sheet Solder
Thickness +0.08
Pad
SMTSK 61.5
3 4 6 8 10 1.53 1.53 4.09 6.35 4.5 2.51 5.39 1.73 2.75 4.22
7
NUMBER OF PARTS PER REEL
Length Code "L"
Part Number
.125 .250 .375
4
8 12
SMTSK-6060
630 440 230
Part Number
Length Code "L"
3 4 6 8 10
SMTSK-61.5
640 540 440 260 220
Packaged on 13" recyclable reels. Tape width is 24mm and 16mm.
Pitch is 16mm and 12mm. Reels conform to EIA-481.
APPLICATION DATA
Mounting Hole A
Edge
C2
Mounting Hole A in Panel 2
PANEL 2 (TOP)
A1 Rad.
A3 Dia.
A2
Location
Tolerance
±.005 "/±0.13mm
A4
PANEL 1 (BOTTOM)
Location Tolerance
±.005" / ±0.13mm
Mounting Hole B
All dimensions are in inches.
UNIFIED
Panel 1
Panel 2
Type
Hardness
Max.
Bottom
Mounting
Hole B
+.003 -.000
Panel
Material
Thickness
Min.
Location
Tolerance
SMTSK
No Limit
.166
PC board
.060
±.005
Top Mounting Hole A
A1
Nom.
A2
±.003
A3
±.003
A4
Min.
.059
.118
.197
.148
Edge
Panel Thickness
Distance
Material Range
C2 Min.
ANY
.057 - .064
.160
All dimensions are in millimeters.
METRIC
Panel 1
Type
Hardness
Max.
Bottom
Mounting
Hole B
+0.08
SMTSK
No Limit
4.22
K-6 PennEngineering • www.pemnet.com
Panel 2
Panel
Material
Thickness
Min.
Location
Tolerance
PC board
1.53
±0.13
Top Mounting Hole A
A1
Nom.
A2
±0.08
A3
±0.08
1.5
3
5
Panel Thickness
A4 Material Range
Min.
3.75
ANY
1.45 - 1.62
Edge
Distance
C2 Min.
4.1
FASTENERS FOR USE WITH PC BOARDS
NOTE ABOUT PLATED AND UNPLATED MOUNTING HOLES FOR BROACHING FASTENERS
Broaching and broach/flare types are designed for unplated mounting hole applications. If used in plated mounting holes, the stresses involved
can damage the plating, push out the plating entirely, or break any traces inside the board that might be connected to the plated hole. When
installing into non-plated mounting holes there may even be issues with delamination, measeling or crazing in some instances.
Increasing the mounting hole size +.005” to +.008” /+0.13 mm to +0.2 mm may relieve these conditions. If increasing the mounting hole does
not correct the issue then we recommend our surface-mount type fasteners.
It is always recommended that you try the fasteners in your specific application before full production begins. We are happy to provide samples
for this purpose.
General recommendations for “Keep Out” areas are the same as our “Min. Distance Hole C/L to Edge” dimensions stated in the dimensional
charts of our bulletin.
KF2™/KFS2™ BROACHING NUTS
• Can be used in aluminum, acrylic, casting and polycarbonate components
PART NUMBER DESIGNATION
KFS2 – 832
KF2 – 832 – ET
PEM® “Two Groove”
(Registered Trademark)
Finish
Thread
Code
Type and
Material
C
A
E
T
All dimensions are in inches.
UNIFIED
Type
Thread
Code
A
(Shank)
Max.
Min.
Sheet
Thickness
Hole Size
In Sheet
+.003 –.000
C
±.003
E
±.005
T
±.005
Min. Dist.
HoleC/L
To Edge
KFS2
256
.060
.060
.147
.165
.219
.065
0.16
KF2
KFS2
440
.060
.060
.166
.184
.219
.065
0.17
.138-32
(#6-32)
KF2
KFS2
632
.060
.060
.213
.231
.281
.065
0.22
.164-32
(#8-32)
KF2
KFS2
832
.060
.060
.250
.268
.344
.096
0.25
.190-32
(#10-32)
KF2
KFS2
032
.060
.060
.272
.290
.375
.127
0.28
Thread
Code
A
(Shank)
Max.
Min.
Sheet
Thickness
Hole Size
In Sheet
+0.08
C
±0.08
E
±0.13
T
±0.13
Min. Dist.
HoleC/L
To Edge
Thread
Size
Carbon
Steel
Stainless
Steel
.086-56
(#2-56)
KF2
.112-40
(#4-40)
All dimensions are in millimeters.
METRIC
Thread
Size x
Pitch
Type
Carbon
Steel
Stainless
Steel
M2 x 0.4
KF2
KFS2
M2
1.53
1.53
3.73
4.19
5.56
1.5
4.2
M2.5 x 0.45
KF2
KFS2
M2.5
1.53
1.53
4.22
4.68
5.56
1.5
4.4
M3 x 0.5
KF2
KFS2
M3
1.53
1.53
4.22
4.68
5.56
1.5
4.4
M4 x 0.7
KF2
KFS2
M4
1.53
1.53
6.4
6.81
8.74
2
6.4
M5 x 0.8
KF2
KFS2
M5
1.53
1.53
6.9
7.37
9.53
3
7.1
PennEngineering • www.pemnet.com K-7
FASTENERS FOR USE WITH PC BOARDS
KFE™/KFSE™ BROACHING STANDOFFS
F
PART NUMBER DESIGNATION
KFSE – 632 – 12
KFE – 632 – 12 ET
Type and
Material
UNIFIED
All dimensions are in inches.
Type
Length
Code
Thread
or Thru Hole
Code
C
C
Finish
A
E
Length “L” ±.005
(Length Code is in 32nds of an inch)
Thread
Size
Thru
Hole
+.004
–.003
Carbon
Steel
Stainless
Steel
Thread
or Thru
Hole
Code
.125
.250
.375
.500
.112-40
(#4-40)
—
KFE
KFSE
440
4
8
12
.138-32
(#6-32)
—
KFE
KFSE
632
4
8
—
.116
KFE
KFSE
116
4
—
.143
KFE
KFSE
143
4
“F” Minimum Thread Length (Where Applicable)
A
(Shank)
Max.
Min.
Hole Size
Sheet
In Sheet
Thick- +.003 –.000
ness
L
C
±.003
E
±.005
Min.
Dist.
HoleC/L
To Edge
.166
.184
.219
.17
.060
.213
.231
.281
.22
.060
.060
.166
.184
.219
.17
.060
.060
.213
.231
.281
.22
A
(Shank)
Max.
Min.
Sheet
Thickness
Hole Size
In Sheet
+0.08
C
±0.08
E
±0.13
Min.
Dist.
HoleC/L
To Edge
.625
(1)
.875
(1)
1.00
16
20
24
—
—
.060
.060
12
16
20
24
28
32
.060
8
12
16
20
24
—
—
8
12
16
20
24
28
32
.375 ± .016
A
L
(1)
.750
Full
PEM® “Two Groove” (Registered Trademark)
.375 Blind
All dimensions are in millimeters.
METRIC
Thread
Size x
Pitch
Thru
Hole
+0.10
–0.08
Type
Carbon
Steel
Stainless
Steel
Thread
or Thru
Hole
Code
Length “L” ±0.13
(Length Code is in millimeters)
M3 x 0.5
—
KFE
KFSE
M3
3
4
6
8
10
12
14
16
1.53
1.53
4.22
4.68
5.56
4.4
—
3.6
KFE
KFSE
3.6
3
4
6
8
10
12
14
16
1.53
1.53
5.41
5.87
7.14
5.5
—
4.2
KFE
KFSE
4.2
3
4
6
8
10
12
14
16
1.53
1.53
6.4
6.81
8.74
7.1
“F” Minimum Thread Length (Where Applicable)
Full
9.5 ± 0.4
PEM® “Two Groove”
(Registered Trademark)
KFB3™ BROACH/FLARE-MOUNT STANDOFFS
PART NUMBER DESIGNATION
KFB3 – 632 – 12 ET
Thread
Code
Type and
Material
Length
Code
Finish
C B
P
E
All dimensions are in inches.
UNIFIED
K
F
A
L
Hole Size
Min.
Length “L” ±.005
in Sheet
Thread
Thread A
Dist.
(Length Code is in 32nds of an inch)
+.005
Size Type
Code
(Shank)
Sheet
B C E K P Hole C/L
(1) (1) Max. Thickness –.001 ±.003 Max. ±.005 ±.003 ±.010 To
.062
.125
.187
.250
.312
.375
.500
.625
.750
1.00
Edge
.112-40
KFB3 440 2 4 6 8 10 12 16 20 — — .09 .050-.065 .166 .122 .165 .219 .179 .040 .17
(#4-40)
.138-32
KFB3 632 2 4 6 8 10 12 16 20 24 32 .09 .050-.065 .213 .171 .212 .280 .226 .040 .22
(#6-32)
“F” Min. Thread Length
Full
.375 Blind
(Where Applicable)
METRIC
All dimensions are in millimeters.
Hole Size
Min.
Thread
Thread
A in Sheet
Dist.
Length “L” ±0.13
+0.13 B C E K P Hole C/L
Size x
Type
Code
(Shank)
Sheet
(Length Code is in millimeters)
Pitch
Max. Thickness –0.03 ±0.08 Max. ±0.13 ±0.08 ±0.25 To
Edge
M3 x 0.5 KFB3 M3 2 3 4 6 8 10 12 14 16 2.29 1.27-1.65 4.22 3.23 4.2 5.56 4.55 1 4.33
M4 x 0.7 KFB3 M4 2 3 4 6 8 10 12 14 16 2.29 1.27-1.65 6.4 5.23 6.33 8.74 6.68 1 6.36
“F” Min. Thread Length
(Where Applicable)
Full
(1) Blind at shank end with .375” minimum thread length from head end.
K-8 PennEngineering • www.pemnet.com
9.5 ±0.4
FASTENERS FOR USE WITH PC BOARDS
KSSB™ BROACHING SNAP-TOP® STANDOFFS
H
PART NUMBER DESIGNATION
KSSB – 156 – 12
X
Top Board
Mounting
Hole A
Diameter
Code
Type and
Material
Length
Code
P
Finish
L
T
B
C
PEM® Dimple
(Registered Trademark)
UNIFIED
All dimensions are in inches.
Length “L” ±.005
Top Board
Mounting
(Length Code is in 32nds of an inch)
Type Hole A B C H P T
Diameter .250 .312 .375 .437 .500 .562 .625 .750 .875 1.00 ±.005 ±.003 ±.005 ±.005 ±.005
Code
KSSB
156
8 10 12 14 16 18 20 24 28 32
.188
.226
.250
.141
.020
METRIC
All dimensions are in millimeters.
Top Board
Mounting
Length “L” ±0.13
Type Hole A
B C H P T
(Length Code is in millimeters)
Diameter ±0.13 ±0.08 ±0.13 ±0.13 ±0.13
Code
KSSB
4MM
8 10 12 14 16 18 20 22 25 4.8 5.74 6.35 3.58 0.51
KSSB™ APPLICATION DATA
Edge
C2
Mounting Hole A
PANEL 2 (TOP)
PANEL 1 (BOTTOM)
Location
Tolerance
Mounting Hole B
Edge
C1
All dimensions are in inches.
UNIFIED
Panel 1
Panel 2
Type
Hardness
Max.
(1)
Bottom
Mounting
Hole B
+.003 -.000
Panel
Material
Thickness
Min.
Edge
Distance
C1 Min.
Location
Tolerance
Hardness
Max.
Top
Mounting
Hole A
+.003 -.000
Panel
Material
Thickness
Range
(2)
Edge
Distance
C2 Min.
KSSB
HRB 65 / HB 116
.213
PC board
.050
.220
±.005
No Limit
.156
PC board
or Metal
.040 - .070
.100
Panel
Material
Thickness
Range
(2)
Edge
Distance
C2 Min.
PC board
or Metal
1 - 1.8
2.54
All dimensions are in millimeters.
METRIC
Panel 1
Type
Hardness
Max.
(1)
Bottom
Mounting
Hole B
+0.08
KSSB
HRB 65 / HB 116
5.41
Panel 2
Panel
Material
Thickness
Min.
Edge
Distance
C1 Min.
Location
Tolerance
Hardness
Max.
Top
Mounting
Hole A
+0.08
PC board
1.27
5.59
±0.13
No Limit
4
(1) HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.
(2) Available for thicker boards on special order.
PennEngineering • www.pemnet.com K-9
FASTENERS FOR USE WITH PC BOARDS
SMTPFLSM™ ReelFast® SURFACE MOUNT CAPTIVE PANEL SCREWS
Dimples on head
designate metric
thread.
Torx®/slot
driver size.
(See chart)
ØD
Solder
Pad
Mounting hole
does not need to be
plated through.
E1
H
ØH
Two Grove
(Registered
Trademark).
Stencil Masking Examples
T2
Shoulder
provides positive
stop during
installation.
T1
PART NUMBER DESIGNATION
G1
SMTPF LS
C
E2
A
G2
Type
Driver
M – 440 – 0
Anti-cross
Thread
Feature
Thread
Code
Length
Code
ET
Finish
UNIFIED
All dimensions are in inches.
ØK Hole Size ØD Min.
Screw A Min.
in Sheet
Solder Driver
Thread
Thread Length (Shank) Sheet
C
E1 E2 G1 G2 H T1 T2
Type Code Code Max. Thickness
Size
Max.
±.010
Nom
±.025
±.025
±.010
Nom.
Nom.
+.003 -.000
Pad
Size
.112-40
0
.040 .210
SMTPFLSM 440 .063 .063 .215 .280 .300
.100 .38 .55
.220 .340 T15
(#4-40)
1
.100
.270
.138-32
0
.040 .240 .100 .42 .62
.252 .400 T15
SMTPFLSM 632 .063 .063 .247 .310 .320
(#6-32)
1
.100
.300
METRIC
All dimensions are in millimeters.
ØK Hole Size ØD Min.
Screw A Min.
in Sheet
Solder Driver
Thread
Thread Length (Shank) Sheet
C
E1 E2 G1 G2 H T1 T2
Type Code Code Max. Thickness Max. ±0.25 Nom ±0.64 ±0.64 ±0.25 Nom. Nom. +0.08 Pad Size
Size
0
1 5.3
M3 x 0.5
SMTPFLSM
M3
1.6 1.6 5.46 7 7.6
2.5 9.6 14
5.6 8.6 T15
1 2.5
6.8
0
1 6.1
2.5 10.7 15.7
6.4 10.2 T15
M3.5 x 0.6 SMTPFLSM
M3.5
1.6 1.6 6.27 7.9 8.13
1 2.5
7.62
NUMBER OF PARTS PER REEL
Thread Size
Parts Per Reel
440
200
632
150
M3
200
M3.5
150
Packaged on 330 mm recyclable reels. Tape width is 24 mm. Supplied with polyimide patch for vacuum pick up. Reels conform to EIA-481.
K-10 PennEngineering • www.pemnet.com
FASTENERS FOR USE WITH PC BOARDS
SMTPF™ ReelFast® SURFACE MOUNT CAPTIVE PANEL SCREWS
Patented.
When Assembled
Spring action of
plastic “fingers”
holds screw
in retracted
position.
L
PSHP
T2
T1
SMTPR
PC Board
P
G
E C
A
E1
B C1
T
R
All dimensions are in inches.
UNIFIED
Screw Part Number
Thread
Size
Type
Thread
Code
.112-40
(#4-40)
PSHP
440
.138-32
(#6-32)
PSHP
632
Assembly Dimensions
Screw
Retainer
Length
Part
Code
Number
0
SMTPR-6-1
1
0
SMTPR-6-1
1
Screw Dimensions
R etainer Dimensions
Total A
Min.
Radial C1 E1
L
T (Shank) Sheet B
Float
±.010 ±.010
±.015
Nom.
Max. Thick. ±.003
G
± .025
P
± .025
T1
Nom.
T2
Nom.
.188
.248
.000
.026
.478
.646
.510 .663
.015 .440 .542
.060 .060 .167 .249 .375 .325
.570
.723
.188
.000
.248
.026
.478
.646
.510 .663
.020 .440 .542
.060 .060 .167 .249 .375 .325
.570
.723
C E R
Max. Nom. ±.005
All dimensions are in millimeters.
METRIC
Screw Part Number
Thread
Size x
Pitch
Type
Thread
Code
M3 x 0.5
PSHP
M3
M3.5 x 0.6
PSHP
M3.5
Assembly Dimensions
Screw
Retainer
Length
Part
Code
Number
0
SMTPR-6-1
1
0
SMTPR-6-1
1
Screw Dimensions
G
± 0.64
P
± 0.64
T1
Nom.
T2
Nom.
4.78
6.3
0
.66
12.14
16.41
12.95 16.84
.38 11.18 13.77
1.53 1.53 4.24 6.33 9.53 8.26
14.48
18.36
12.14
16.41
12.95 16.84
.51 11.18 13.77
1.53 1.53 4.24 6.33 9.53 8.26
14.48
18.36
4.78
0
6.3
.66
RETAINER - Packaged on 330 mm recyclable reels of 400
pieces. Tape width is 24 mm. Supplied with Kapton® patch for
vacuum pick up. Reels conform to EIA-481.
SCREW - Packaged in bags. Retainers and screws are sold
separately.
PART NUMBER DESIGNATION
FOR SCREW
PSHP – 632 – 0
Type
Thread
Code
COLOR CAPABILITIES FOR TYPE PSHP SCREW
L
Length Cap
Code Style
(Lobed)
001
Color
Code
(Standard
Black)
The colors shown here (codes #002 thru #007) are non-stocked
standards and available on special order. Since actual cap colors may
vary slightly from those shown here, we recommend that you request
samples for color verification. If you require a custom color or you need
a “color matched” cap, please contact us.
Std. Black #001
Red #002
R etainer Dimensions
Total A
Min.
Radial C1 E1
L
T (Shank) Sheet B
Float
±0.25 ±0.25 ±0.38 Nom.
Max. Thick. ±0.08
Orange #003
Yellow #004
Available with Torx®
recess on special order.
Four dimples on
head designate
metric thread.
C E R
Max. Nom. ±0.13
PART NUMBER DESIGNATION
FOR RETAINER
SMTPR – 6 – 1
Type
Retainer
Size
.396”/
10.06 mm
Min.
Shank
Code
ET
Finish
Solder
Pad
Mounting hole
does not need to be
plated through.
.250” +.003 –.000
6.35 mm +0.08
Stencil Masking Examples
Green #005
Blue #006
Violet #007
Non-flammable UL 94-V0 plastic caps are available on special order.
Metal Phillips Recess
#4-40 & M3 = #1
#6-32 & M3.5 = #2
PennEngineering • www.pemnet.com K-11
FASTENERS FOR USE WITH PC BOARDS
PFK™ BROACHING CAPTIVE PANEL SCREWS
PEM® Blue Nylon Ring*
(Trademark)
E
PART NUMBER DESIGNATION
PFK – 632 – 62
H
T2
T1
Screw
Length
Code
Thread
Code
Type
Diagonal knurl
identifies metric
thread sizes
Shown here with
self-clinching mating nut
P
UNIFIED
All dimensions are in inches.
Thread
Size
Type
Thread
Code
.112-40
(#4-40)
PFK
440
.138-32
(#6-32)
PFK
632
Screw
Length
Code
40
62
84
40
62
84
A
(Shank)
Max.
Min.
Sheet
Thickness
Hole
Size In
Sheet
+.003 –.000
C
±.003
E
±.010
.060
.060
.265
.283
.312
.060
.060
.281
.299
.344
Screw
Length
Code
40
62
84
A
(Shank)
Max.
Min.
Sheet
Thickness
Hole Size
In Sheet
+0.08
C
±0.08
E
±0.25
G
±0.4
H
±0.13
1.53
1.53
6.73
7.19
7.92
6.4
9.5
12.7
1.83
G
±.016
.250
.375
.500
.250
.375
.500
G
A
C
H
±.005
.072
.072
Shoulder
provides
positive
stop during
installation.
P
±.025
T1
Max.
T2
Nom.
Min. Dist.
Hole CL
To Edge
.36
.54
.20
.36
.54
.26
P
±0.64
T1
Max.
T2
Nom.
Min. Dist.
Hole CL
To Edge
0
3.2
6.4
9.14
13.72
5.08
.000
.125
.250
.000
.125
.250
METRIC
All dimensions are in millimeters.
Thread
Size x
Pitch
Type
Thread
Code
M3 x 0.5
PFK
M3
*Retaining rings are plastic with normal 250°F / 120°C temperature limit.
KFH™ BROACHING STUDS
PEM® Dimple (Registered Trademark)
S
T
PART NUMBER DESIGNATION
KFH – 632 – 8 ET
Type and
Material
Thread
Code
Length
Code
Finish
A
H
L
All dimensions are in inches.
UNIFIED
Hole
Max.
Min.
Length “L” ±.010
Thread
Thread
A
Min.
Size in
Hole
Dist.
(Length Code is in 16ths of an inch)
Size
Type
Code
(Shank)
Sheet
Sheet
Size in
H
S
T
HoleC/L
Max.
Thickness
+.003
Attached
±.010
Max.
±.005
To
.250 .312 .375 .500 .625 .750 –.000 Parts (1) Edge
.112-40
(#4-40)
.138-32
(#6-32)
.164-32
(#8-32)
.190-32
(#10-32)
KFH 440 4
5
6
8
10
12
.065 .060 .120 .145 .180 .09 .020 .15
KFH 632 4
5
6
8
10
12
.065 .060 .140 .170 .200 .09 .020 .19
KFH 832 4
5
6
8
10
12
.065 .060 .166 .195 .225 .09 .020 .20
KFH 032 4
5
6
8
10
12
.065 .060 .189 .220 .250 .09 .020 .20
METRIC
All dimensions are in millimeters.
Hole
Max.
Min.
Length “L” ±0.25
Thread
Thread
A
Min.
Size in
Hole
Dist.
Size x
Type
Code
(Shank)
Sheet
Sheet
Size
in
H
S
T
HoleC/L
(Length Code is in millimeters)
Pitch
Max.
Thickness
+0.08
Attached
±0.25
Max.
±0.13
To
Parts (1) Edge
M3 x 0.5
KFH
M3
6
8
10
12
15
18
1.65
1.53
3
3.7
4.58
2.3
0.51
3.8
M4 x 0.7
KFH
M4
6
8
10
12
15
18
1.65
1.53
4.2
4.8
5.74
2.3
0.51
5.1
M5 x 0.8
KFH
M5
6
8
10
12
15
18
1.65
1.53
5
5.8
6.6
2.3
0.51
5.3
(1) Threads are gaugeable to within 2 pitches of the “S” Max. dimension. A class 3B/5H maximum material commercial nut shall pass up to the “S” Max.
dimension.
K-12 PennEngineering • www.pemnet.com
FASTENERS FOR USE WITH PC BOARDS
SMTRA™ ReelFast® SURFACE MOUNT RIGHT ANGLE (R’ANGLE®) FASTENERS
Grooves identify
unified thread
PART NUMBER DESIGNATION
SMTRA 256 – 8 – 6
Height
Code
Thread
Code
Type
ET
G
Length Finish
Code
N
P
D
SP
B
K
Solder Pad
PL
C
F
J
PA
Stencil Masking Examples
SH
Patented.
T
L
A
Solder pad can be flush to edge.
Mounting holes do not need to be plated through.
All dimensions are in inches.
UNIFIED
Thread
Size
.086-56
(#2-56)
.112-40
(#4-40)
.138-32
(#6-32)
.164-32
(#8-32)
Type
Thread
Code
Height
Code
Length
Code
Length
L
±.005
Min.
Sheet
Thickness
Hole
Size
In Sheet
+.003 –.000
A
±.006
B
±.006
C
±.006
D Height G J K N P SP
T
±.006 F ±.006 Nom. Nom. Max. Max. ±.003 Nom.
±.006
SMTRA
256
8
6
.188
.040
.053
.218
.040
.060
.140 .250 .345 .020 .030 .048 .040 .157 .105
SMTRA
440
9
6
.188
.040
.053
.250
.050
.065
.160 .281 .390 .020 .030 .048 .040 .188 .125
SMTRA
632
10
8
.250
.040
.053
.312
.050
.065
.205 .312 .450 .020 .030 .048 .040 .250 .145
SMTRA
832
12
9
.281
.040
.053
.375
.050
.075
.250 .375 .535 .020 .030 .048 .040 .312 .195
D Height G J K N P SP
T
±0.15
F
±0.15 Nom. Nom. Max. Max. ±0.08 Nom.
±0.15
METRIC
UNIFIED
METRIC
All dimensions are in millimeters.
Type
Thread
Code
Height
Code
Length
Code
Length
L
±0.13
Min.
Sheet
Thickness
Hole
Size
In Sheet
+0.08
A
±0.15
B
±0.15
C
±0.15
M2 x 0.4
SMTRA
M2
6
5
5
1
1.35
5.5
1
1.5
3.5 6 8.4 0.5 0.75 1.22 1
4 2.65
M2.5 x 0.45
SMTRA
M25
6
5
5
1
1.35
5.5
1
1.5
3.5
6
4 2.65
M3 x 0.5
SMTRA
M3
7
5
5
1
1.35
6.35
1.25
1.65
4
7 9.75 0.5 0.75 1.22 1 4.75 3.2
M4 x 0.7
SMTRA
M4
9
7
7
1
1.35
9.53
1.25
1.65
Part
Number
Thread
Size x
Pitch
Thread
Code
Pad Width
PA
Min.
Pad Length
PL
Min.
Hole Spacing
SH
±.002
Hole Size
In Sheet
+.003 –.000
256
.262
.171
.157
.053
440
.294
.171
.188
.053
632
.356
.233
.250
.053
832
.419
.264
.312
Thread
Code
Pad Width
PA
Min.
Pad Length
PL
Min.
Hole Spacing
SH
±0.05
Parts
Per Reel
6.35 9 13.1 0.5 0.75 1.22 1 7.9 4.8
Pitch Tape Width
(mm) (mm)
SMTRA256-8-6
375
16
SMTRA440-9-6
300
16
24
SMTRA632-10-8
200
20
32
.053
SMTRA832-12-9
200
20
32
SMTRAM2-6-5
375
16
24
Hole Size
In Sheet
+0.08
SMTRAM25-6-5
375
16
24
SMTRAM3-7-5
300
16
24
SMTRAM4-9-7
200
20
32
M2
6.62
4.57
4
1.35
M25
6.62
4.57
4
1.35
M3
7.47
4.57
4.75
1.35
M4
10.65
6.57
7.9
1.35
8.4 0.5 0.75 1.22 1
24
PennEngineering • www.pemnet.com K-13
FASTENERS FOR USE WITH PC BOARDS
SFK™ SpotFast® CLINCH/BROACH MOUNT FASTENERS
Metal
Plastic
C2
C1
E
Patented.
PEM® Dimple
(Registered Trademark)
L
Panel 1
Thickness
Mounting Hole
±0.08 mm /
+0.08 mm /
±.003”
+.003” –.000”
mm in. mm
in.
0.8 .031 3
.118
Type
and
Size
Thickness
Code
SFK-3
0.8
SFK-3
1.0
1
.039
3
SFK-3
1.2
1.2 .047
3
Panel 2
Thickness
Mounting Hole
Min.
+0.08 mm /
(1)
+.003” –.000”
mm in.
mm in.
1.6 .063
2.5 .098
C1
Max.
mm in.
2.98 .117
C2
±0.08 mm /
±.003”
mm in.
2.9 .114
E
Max.
mm in.
3.53 .139
.118
1.6 .063
2.5 .098
2.98 .117
2.9 .114
3.76 .148
2.51 .099 3
0.12
.118
1.6 .063
2.5 .098
2.98 .117
2.9 .114
3.76 .148
2.72 .107 3
0.12
Min. Dist
L
Hole C/L
Max.
To Edge
mm in. mm
in.
2.31 .091 3
0.12
SFK-3
1.6
1.6 .063 3
.118
1.6 .063
2.5 .098
2.98 .117
2.9 .114
3.76 .148
3.12 .123 3
0.12
SFK-5
0.8
0.8 .031 5
.197
1.6 .063
4.5 .177
4.98 .196
4.9 .193
5.56 .219
2.31 .091 5.1
0.20
0.20
SFK-5
1.0
1 .039 5
.197
1.6 .063
4.5 .177
4.98 .196
4.9 .193
5.56 .219
2.51 .099 5.1
SFK-5
1.2
1.2 .047 5
.197
1.6 .063
4.5 .177
4.98 .196
4.9 .193
5.56 .219
2.72 .107 5.1
0.20
SFK-5
1.6
1.6 .063 5
.197
1.6 .063
4.5 .177
4.98 .196
4.9 .193
5.56 .219
3.12 .123 5.1
0.20
(1) Fastener will provide flush application at minimum sheet thickness.
Panel 1
Metal
Panel 2
PCB/plastic
Type SFK joining metal to PCB/plastic.
Can be used as a single flush-mounted
pivot point. For more information, please
contact techsupport@pemnet.com
PART NUMBER DESIGNATION
SFK – 3 – 0.8 – ZI
Type
K-14 PennEngineering • www.pemnet.com
Panel 1
Mounting
Hole Code
Thickness
Code
Finish
FASTENERS FOR USE WITH PC BOARDS
MATERIAL AND FINISH SPECIFICATIONS
Threads (1)
Fastener Materials
Standard Finishes
Optional Finish
For Use in Sheet Hardness: (3)
Electro-Plated
Electro-Plated
Tin ASTM
Tin ASTM
Internal, External,
Nylon,
B 545, Class B
B 545, Class B
Aluminum,
ASME
ASME
300
Temp.
Passivated
With Clear
With Clear
Acrylic,
B1.1 2B/
B1.1 2A/ Lead-Free Series CDA-510
Limit
and/or
Preservative
Preservative
HRB 70 / HRB 65 / HRB 60 / HRB 55 / Castings,
ASME
ASME
Carbon Stainless Phosphor
200˚ F/ Tested Per
Coating, No Coating,
Black
HB 125
HB 116
HB 107
HB 96 Polycarbonate,
Type
B1.13M 6H B1.13M 6g
Steel
Steel
Bronze
Brass
93˚ C
ASTM A380
annealed (4) Finish annealed (4)
Nitride or Less or Less or Less or Less and PC board
KF2
• •
• • •
KFS2
• • • • •
KFE
• •
KFSE
• • • • •
KFB3
• •
• • •
• • •
KSSB • • • • •
KFH
• •
• • •
PFK
Retainer
• • • • •
Screw
• • •
•
Spring
•
Retaining Ring
•
Part Number Codes For Finishes
Threads (1)
None
ET
X
ET
Fastener Materials
BN
Standard Finishes (2)
Electro-Plated
Internal,
External,
Zinc Plated
Tin ASTM
ASME
ASME
300
per ASTM B633,
B 545, Class A
Miniature
B1.1 2B/
B1.1 2A/
Lead-Free Hardened
Series
SC1 (5µm),
With Clear
ISO 1501,
ASME
ASME
Carbon
Carbon
Stainless
Zinc
Type III,
Preservative
Type
4H6
B1.13M 6H
B1.13M 6g
Steel
Steel
Steel
Brass
Diecast
Colorless
Coating, annealed (4)
• •
S1 to S1.4
0-80 to 8-32/
•
SMTSO
M1.6 to M4
For Use in Sheet Hardness: (3)
Bright
Nickel
Over
Copper
Flash
•
HRB 80 /
HB 150
or less
PC board
(6)
•
SMTSOB
•
•
SMTRA
•
• • •
•
SMTPFLSM
Retainer
Screw
•
•
•
• • •
Spring
•
PSHP (5)
•
•
SMTPR
•
SFK
• •
SMTSSS
•
•
•
•
•
•
•
SMTSK
•
•
•
Part Number Codes For Finishes
ET
ZI
CN
(1) For plated studs, Class 2A/6g, the maximum major and pitch diameter, after plating, may equal basic sizes and can be gauged to Class 3A/6h, per
ASME B1.1 Section 7, Paragraph 2 and ASME B1.13M, Section 8, Paragraph 8.2.
(2) See PEM Technical Support section of our web site for related plating standards and specifications.
(3) HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.
(4) Optimal solderability life noted on packaging.
(5) ABS cap on PSHP screw has a temperature limit of 200˚ F / 93˚ C.
(6) The tin deposit on type SMTSOB meets the requirements of ASTM B545, Class A and although the copper and nickel barrier layers used under the
tin do not strictly comply with ASTM B545 thickness requirements they have proven effective at preventing zinc migration and providing the specified
solderable shelf life.
PennEngineering • www.pemnet.com K-15
FASTENERS FOR USE WITH PC BOARDS
INSTALLATION
KF2™/KFS2™/KFE™/KFSE™/ PFK™ FASTENERS
1. Prepare properly sized mounting hole in board.
2. Place fastener into the anvil hole and place the mounting hole over the shank of the
fastener as shown in drawing.
3. With installation punch and anvil surfaces parallel, apply squeezing force until shoulder
contacts the board.
PEMSERTER® Installation Tooling (1)
PEMSERTER® Installation Tooling (1)
Thread
Code
Type
KFE/KFSE
440/116 -4 to -8
KFE/KFSE
440/116 -10 to -12
KFE/KFSE
440/116 -16 to -20
KFE/KFSE
440/116 -20 to -24
KFE/KFSE
M3 -3 to -6
KFE/KFSE
M3 -8 to -10
KFE/KFSE
M3 -12 to -14
KFE/KFSE
M3 -14 to -16
KFE/KFSE
632/143 -4 to -8
KFE/KFSE
632/143 -10 to -12
KFE/KFSE
632/143 -16 to -20
KFE/KFSE
632/143 -22 to -24
KFE/KFSE
632/143 -28 to -32
KFE/KFSE
3.6 -3 to -6
KFE/KFSE
3.6 -8 to -10
KFE/KFSE
3.6 -12 to -16
KFE/KFSE
4.2 -2
KFE/KFSE
4.2 -3 to -6
KFE/KFSE
4.2 -8 to -10
KFE/KFSE
4.2 -12 to -14
KFE/KFSE
4.2 -14 to -16
Type
Thread
Code
Anvil Part
Punch Part
Number Number
PFK
440/M3
975200026 975200060
PFK
632
975200027 975200061
Anvil Part
Punch Part
Number Number
975200846300
975200847300
975200848300
975200882300
975200846300
975200847300
975201222300
975200048
975200848300
975200849300
975200850300
975200851300
975200883300
975200884300
975200849300
975200850300
975200851300
975201216300
975200048
975201217300
975201218300
975201220300
975201219300
Thread Dia. +.080”/2mm
PUNCH
Max. Screw
Extension
ANVIL
PFK
PUNCH
PEMSERTER® Installation Tooling (1)
Type
Thread
Code
Anvil Part
Punch Part
Number Number
KF2/KFS2 080 8015899
KF2/KFS2 256/440/M2/M2.5/M3 975200904300
KF2/KFS2
632/M3.5
975200035 975200048
KF2/KFS2
832/M4
975200037
KF2/KFS2
032/M5
975200905300
ANVIL
KF2/KFS2/
KFE/KFSE
(1) Click here for a quote on Haeger® custom installation tooling.
KSSB™/KFH™ FASTENERS
1. Prepare properly sized mounting hole in board.
2. Place fastener into mounting hole as shown.
3. With installation punch and anvil surfaces parallel,
apply squeezing force until head contacts the board.
PUNCH
ANVIL
PUNCH
Part
Number
KFH-440-L
KFH-632-L
KFH-832-L
KFH-032-L
ANVIL
L Min.
D
L + .2”/
5.1 mm Min.
PEMSERTER® Installation Tooling (1)
Part
Number
KFH-M3-L
KFH-M4-L
KFH-M5-L
D
Punch
Anvil
+.003” -.000” Part No.
Part No.*
.113”
970200006300
.140”
975200048 970200007300
.166”
970200008300
.191”
970200009300
D
+0.08mm
3.1mm
4.1mm
5.1mm
Punch
Part No.
Anvil
Part No.*
970200229300
975200048 970200019300
970200008300
KFH
(1) Click here for a quote on Haeger® custom installation tooling.
K-16 PennEngineering • www.pemnet.com
D
KSSB
PEMSERTER® Installation Tooling (1)
Part
Number
D
Punch Anvil for material Anvil for material
+.003” -.000”/ Part No. .050” / 1.27mm to
greater than
+0.08mm
.065” / 1.65mm .065” / 1.65mm
KSSB-156-L
.216”
975200048
8022167
970200015300
KSSB-4mm-L
5.49mm
FASTENERS FOR USE WITH PC BOARDS
KFB3™ FASTENERS
1. Prepare properly sized mounting hole in board.
2. Place fastener into the anvil hole and place the mounting hole over the shank of the fastener
as shown in diagram to the left.
3. Using a punch flaring tool and a recessed anvil, apply squeezing force until the shoulder of
the fastener contacts the board. As the fastener seats itself in the proper position, the punch
tool will flare the extended portion of the shank outward to complete the installation. The
combination of broaching and flaring provides high pushout performance.
BEFORE
PEMSERTER® Installation Tooling (1)
Thread
Code
Length
Code
Anvil
Punch
(Flaring Tool)
#4-40
#4-40
#4-40
#4-40
#4-40
#6-32
#6-32
#6-32
#6-32
#6-32
#6-32
-2
-4 to -8
-10 to -12
-16 to -20
-20 to -24
-2
-4 to -8
-10 to -12
-16 to -20
-22 to -24
-28 to -32
975201213300
975200846300
975200847300
975200848300
975200882300
975201215300
975200849300
975200850300
975200851300
975200883300
975200884300
Thread
Code
975201231400
975201232400
Length
Code
Anvil
M3
-2
975201213300
M3
-3 to -6
975200846300
M3
-8 to -10
975200847300
M3
-12 to -14
975201222300
M3
-14 to -16
975200848300
M4
-2
975201216300
M4
-3 to -6
975201217300
M4
-8 to -10
975201218300
M4
-12 to -14
975201220300
M4
-14 to -16
975201219300
AFTER
PUNCH
Punch
(Flaring Tool)
975201231400
975201221400
ANVIL
KFB3
(1) PennEngineering manufactures and stocks the installation tooling for KFB3 fasteners.
Click here for a quote on Haeger® custom installation tooling.
SFK™ FASTENERS
Step 1. Prepare properly sized mounting hole in both panels.
Step 2. Using only Panel 1, with the punch and anvil surfaces
parallel, apply squeezing force until the fastener is flush with
the top of Panel 1.
Step 3. Place Panel 2 over fastener and apply squeezing force.
SFK-3
SFK-5
Metal
Panel 1
Anvil
PEMSERTER® Installation Tooling (1)
Size
Punch
Punch
C
±0.13/±.003
(mm) / (in.)
Punch
Part No.
Anvil
Part No.*
3.05 / .120
5.05 / .199
975200048
975200048
970200229300
970200020300
C
Step 2
Panel 2
PCB/plastic
Panel 1
Metal
Anvil
* Part number for anvil used in Step 2
NOTE: Fastener can be installed in both sheets at once when metal panel is adequately soft
compared to the non-metal panel. E-mail techsupport@pemnet.com for more information.
Step 3
(1) Click here for a quote on Haeger® custom installation tooling.
INSTALLATION NOTES
• For best results we recommend using a HAEGER® or PEMSERTER® machine for installation of
PEM® self-clinching fasteners. Please check our website for more information.
• Visit the Animation Library on our website to view the installation process for select products.
PennEngineering • www.pemnet.com K-17
FASTENERS FOR USE WITH PC BOARDS
INSTALLATION
SMTSO™ NUTS AND STANDOFFS
SMTRA™ R’ANGLE® FASTENERS
Polyimide patch applied here for
vacuum pick up.
Solder paste applied
to pad on PCB.
Solder fastener in place
using standard surface
mount techniques.
Flat top for vacuum pick up.
Solder paste applied to
pad on PCB.
Solder fastener in place
using standard surface
mount techniques.
Undercut to accept
solder fillet and permit
flush to edge installation.
SMTPF™ CAPTIVE PANEL SCREWS
Polyimide patch applied
here for vacuum pick up.
Screw snapped in place.
Solder paste applied
to pad on PCB.
Solder fastener in place
using standard surface
mount techniques.
SMTPFLSM™ CAPTIVE PANEL SCREWS
Polyimide patch applied here
for vacuum pick up.
Solder paste applied to
pad on PCB.
Solder fastener in place using
standard surface mount techniques.
Installs in retracted/unfastened position
SMTSK™ STANDOFFS
SMTSS™ STANDOFFS
Polyimide patch applied here for
vacuum pick up.
Solder paste applied
to pad on PCB.
Solder fastener in place using standard
surface mount techniques.
K-18 PennEngineering • www.pemnet.com
Solder paste applied
to pad on PCB.
Solder fastener in place
using standard surface
mount techniques.
FASTENERS FOR USE WITH PC BOARDS
For Additional HAEGER® and PEMSERTER® Tooling Information / Part Numbers
} }
Go to haeger.com to access
the Auto and Manual Tooling Wizards
Or download the
HAEGER WIZZARD Phone App
HAEGER® MANUAL TOOLING CATALOG
PEMSERTER® MANUAL TOOLING CATALOG
HAEGER® AUTO TOOLING CATALOG
PEMSERTER® AUTO TOOLING CATALOG
PennEngineering • www.pemnet.com K-19
FASTENERS FOR USE WITH PC BOARDS
PERFORMANCE DATA(1)
KF2™/KFS2™/KFE™/KFSE™/KFB3™/KFH™/PFK™ BROACHING AND BROACH/FLARE MOUNT FASTENERS
UNIFIED
Thread
Type
Code
KF2, KFS2
KFE, KFSE
Test Sheet Thickness
Installation
Pushout (2)
Torque-out
&
(lbs.)
(lbs.)
(in. lbs.)
Test Sheet Material
256 (3) .060” FR-4 Panel
400
60
Rated
Current
Amps (5)
6 —
440
632
832
032
(3)
(3)
(3)
(3)
.060” FR-4 Panel 400 65
.060” FR-4 Panel 500 80
.060” FR-4 Panel
700
95
.060” FR-4 Panel 700 100
KFB3
440
(3)
.060” FR-4 Panel 1,000 140
18 —
632
(3)
.060” FR-4 Panel 1,500
170
28 —
KFH
440
632
832
4
8
15
.060” FR-4 Panel 400
.060” FR-4 Panel 400
.060” FR-4 Panel 400
65 7 14
70 11 19
80 16 24
032
18
.060” FR-4 Panel 400
90
PFK
440
(3)
.060” FR-4 Panel 250
55 (3) —
632
(3)
.060” FR-4 Panel 400
60 (3) —
Thread
Type
Code
METRIC
Max. Nut
Tightening Torque
(in. lbs.)
Max. Nut
Tightening Torque
(N•m)
M2
(3)
15 —
30 —
35
—
40 —
17 30
Test Sheet Thickness
Installation
Pushout (2)
Torque-out
&
(kN)
(N)
(N•m)
Test Sheet Material
1.5 mm FR-4 Panel
2.2
267
Rated
Current
Amps (5)
0.68
—
KF2, KFS2
M3
KFE,
KFSE M4
M5
(3)
1.5 mm FR-4 Panel 2.2
290
1.7 —
(3)
1.5 mm FR-4 Panel 2.2
420
3.4 —
(3)
1.5 mm FR-4 Panel 2.9
440
4.5 —
M3
KFB3
M4
(3)
1.5 mm FR-4 Panel 4.4
560 2.03 —
(3)
1.5 mm FR-4 Panel 6
680 3.2 —
M3
0.45
1.5 mm FR-4 Panel 1.8
285 0.79 15
KFH
M4
1.6
1.5 mm FR-4 Panel 1.8
355
M5
2.1
1.5 mm FR-4 Panel 1.8
400 1.92 32
PFK
M3
(3)
1.5 mm FR-4 Panel 1.1
245 (3) —
1.8 23
METRIC
UNIFIED
KSSB™ BROACHING SNAP-TOP® STANDOFFS
Panel 1 (.060” FR-4 Fiberglass) (4)
Panel 2 (Removable) (4)
Type
Installation
(lbs.)
Pushout
(lbs.)
Max. First On
Force (lbs.)
Min. First Off
Force (lbs.)
Min. 15th Off
Force (lbs.)
KSSB
500
110
13
3.0
1.0
Panel 1 (1.5 mm FR-4 Fiberglass) (4)
Panel 2 (Removable) (4)
Type
Installation
(kN)
Pushout
(N)
Max. First On
Force (N)
Min. First Off
Force (N)
Min. 15th Off
Force (N)
KSSB
2.2
484
57.7
13.3
4.4
(1) Published installation forces are for general reference. Actual set-up and confirmation of complete installation should be made by observing
proper seating of fastener as described in the installation steps. Other performance values reported are averages when all proper
installation parameters and procedures are followed. Variations in mounting hole size, sheet material, and installation procedure may affect
performance. Performance testing this product in your application is recommended. We will be happy to provide technical assistance and/
or samples for this purpose.
(2) These are typical values for parts installed in drilled mounting holes. Punched mounting holes yield values approximately 15% less.
(3) Not applicable.
(4) See Application Data drawing on page 8.
(5) The maximum carrying current for each of the above fasteners is calculated based on a heat transfer coefficient of 20 W/m² °K and a maximum
temperature rise of 15°C / 27˚F above ambient.
K-20 PennEngineering • www.pemnet.com
FASTENERS FOR USE WITH PC BOARDS
SFK™ SpotFast® CLINCH/BROACH MOUNT FASTENERS
SMTSS™ ReelFast® SNAP-TOP® STANDOFFS(1)(2)
Type Thick-
Installation into Panel 1
Installation into Panel 2
(3)
Pushout of Panel 2
and
ness
Cold-rolled Steel
FR-4 Fiberglass
Size Code
kN lbs. kN lbs. N lbs.
SFK-3 0.8
6.2
1400
1.8
400
200
45
SFK-3 1.0
8
1800
1.8
400
200
45
400
200
45
10.2
11.1
13.5
15.6
17.8
2300
2500
3000
3500
4000
1.8
1.8
1.8
1.8
1.8
400
400
400
400
400
200
400
400
400
400
45
90
90
90
90
SMTSO™/SMTSOB™ FASTENERS(1)(2)
Thread/
Test Sheet Material - .062” Single Layer FR-4
Rated
Type Thru-hole Pushout Pushout Torque-out Torque-out Current
Code
(lbs.)
(N)
(in. lbs.)
(N•m)
Amps (6)
SMTSO
11
080 85.1 378.7 4.94 0.56
SMTSOB —
SMTSO
25
256 56.5 251 8.56 1
SMTSOB 40
SMTSO
22
440 56.5 251 8.56 1
SMTSOB 36
SMTSO
34
632 93.5 416 13.83 1.6
SMTSOB 55
SMTSO
47
832 151.1 672 26.96 3
SMTSOB 76
SMTSO
22
116
— — — —
SMTSOB 37
SMTSO
33
143
— — — —
SMTSOB 55
SMTSO
11
M1 85.1 378.7 4.94 0.56
SMTSOB —
SMTSO
10
M1.2 85.1 378.7 4.94 0.56
SMTSOB —
SMTSO
10
M1.4 85.1 378.7 4.94 0.56
SMTSOB —
SMTSO
10
M1.6 85.1 378.7 4.94 0.56
SMTSOB —
SMTSO
22
M3 56.5 251 8.56 1
SMTSOB 36
SMTSO
34
M3.5 93.5 416 13.83 1.6
SMTSOB 55
SMTSO
47
M4 151.1 672 26.96 3
SMTSOB 76
SMTSO
22
3.1
— — — —
SMTSOB 36
SMTSO
33
3.6
— — — —
SMTSOB 55
SMTSO
46
4.2
— — — —
SMTSOB 75
Max. Snap-on Force
SMTSSS-156
.062" Single Layer FR-4
113 lbs.
20 lbs.
SMTSSS-4MM
1.58 mm Single Layer FR-4
500 N
89 N
SMTSK™ KEYHOLE® STANDOFFS(1)(2)
Panel 1 (Bottom)
Type and Size
Test Sheet Material
Pushout
SMTSK-6060
.062" Single Layer FR-4
113 lbs.
SMTSK-61.5
1.58 mm Single Layer FR-4
500 N
SMTRA™ R’ANGLE® FASTENERS(1)(2)
UNIFIED
1.8
Pushout
Part
Number
SMTRA256-8-6
SMTRA440-9-6
SMTRA632-10-8
SMTRA832-12-9
Test Sheet Material - .062” Single Layer FR-4
Pushout (lbs.)
Side Load (lbs.)
51.7
7.1
89.5
10.8
110.3
8.4
137.2
21.2
METRIC
0.8
1.0
1.2
1.6
2000
Test Sheet Material
Part
Number
SMTRAM2-6-5
SMTRAM25-6-5
SMTRAM3-7-5
SMTRAM4-9-7
Test Sheet Material - 1.58 mm Single Layer FR-4
Pushout (N)
Side Load (N)
418.2
56.8
216.5
36.9
257.6
41.3
369.3
73.3
SMTPFLSM™ FASTENERS(1)
UNIFIED
SFK-5
SFK-5
SFK-5
SFK-5
8.9
Type, Material
and Size
Panel 2 (Top)
Test Sheet Material
Min. Tensile
Rec. Tightening
Type and
Strength
Torque
.060” P.C. Board
Thread Size
(lbs.)
(in. lbs.) (4)
Pull-off (lbs.) (5)
SMTPFLSM-440 556
4.4
100
SMTPFLSM-632
724
7.0
105
METRIC
SFK-3 1.2
SFK-3 1.6
Panel 1 (Bottom)
Test Sheet Material
Min. Tensile
Rec. Tightening
Type and
Strength
Torque
1.5 mm P.C. Board
Thread Size
(N)
(N•m) (4)
Pull-off (N) (5)
SMTPFLSM-M3 2900
0.61
445
SMTPFLSM-M3.5
3269
0.8
465
SMTPR™ RETAINERS(1)
Part Number
SMTPR-6-1ET
Test Sheet Material - .062” Single Layer FR-4
Pushout
Pushout
(lbs.)
(N)
161.4
718
TESTING CONDITIONS FOR SURFACE MOUNTED FASTENERS
Oven
High Temp
Board Finish
Screen Printer
Vias
Quad ZCR convection oven w/ 4 zones
Spokes
473˚F / 245˚C
Paste
62% Sn, 38% Pb
Ragin Manual Printer Stencil
None
2 Spoke Pattern
Amtech NC559LF Sn96.5/3.0Ag/0.5Cu (SAC305) (SMTSO, SMTRA, SMTPR)
Alpha CVP-390 Sn96.5/3.0Ag/0.5Cu (SAC305) (SMTPFLSM, SMTSS, SMTSK)
.0067” / 0.17 mm thick (SMTSO, SMTRA, SMTPR, SMTSS, SMTSK)
.005” / 0.13 mm thick (SMTPFLSM)
(1) With lead-free paste. Average values of 30 test points. The data presented here is for general comparison purposes only. Actual performance is
dependent upon application variables. We will be happy to provide samples for you to install. If required, we can also test your installed hardware and
provide you with the performance data specific to your application.
(2) Further testing details can be found in our website’s literature section.
(3) In most applications, pullout strength of the SFK fastener in Panel 1 exceeds pushout strength of Panel 2.
(4) Torque values shown will produce a preload of 70% minimum tensile with a nut factor “k” equal to .1.
(5) Failure occurred at the solder joint. Screw retention strength is greater than the retainer.
(6) The maximum carrying current for each of the above fasteners is calculated based on a heat transfer coefficient of 20 W/m² °K and a maximum
temperature rise of 15°C / 27˚F above ambient.
PennEngineering • www.pemnet.com K-21
FASTENERS FOR USE WITH PC BOARDS
SMTSO™ REFLOW CURVE
K-22 PennEngineering • www.pemnet.com
FASTENERS FOR USE WITH PC BOARDS
OTHER FASTENERS FOR CONSIDERATION TO USE WITH PC BOARDS
PF11MW™ FLOATING CAPTIVE PANEL SCREWS
(See PEM® Bulletin PF)
Unique flare mount feature allow fasteners to “float” in mounting hole.
• Compensates for mating thread misalignment.
• Installs into any panel material.
• Appropriate for close center-line-to-edge applications.
• Color coded knobs available.
Can install
into PC
Board,
plastic
or metal
PF11MF™ FLARE-MOUNTED CAPTIVE PANEL SCREWS
(See PEM® Bulletin PF)
• Appropriate for close centerline-to-edge applications.
• Doesn’t require high installation force.
• Installs into any panel material.
• Installs flush on back side of panel.
• Color coded knobs available.
Can install
into PC
Board,
plastic
or metal
SGPC™ SWAGING COLLAR STUDS
(See PEM® Bulletin FH)
• Can be installed into most materials, including stainless steel and rigid non-metallic panels.
• Can be used to attach dissimilar materials.
• Can accommodate multiple panels as long as the total thickness does not exceed the
maximum sheet thickness.
• Appropriate for close center-line-to-edge applications.
Can install
into PC
Board,
plastic
or metal
SOAG™/SOSG™ GROUNDING STANDOFFS
(See PEM® Bulletin SO)
• Designed for clinching into steel or aluminum chassis.
• “Gripping teeth” on opposite side of standoff makes firm electrical contact with mating PC Board.
SKC™ KEYHOLE® STANDOFFS
(See PEM® Bulletin SK)
• Clinch feature mounts fastener permanently into metal sheet.
• Allows for quick attachment and detachment of PC Board.
• Head is flush or sub-flush in metal sheet.
• Makes horizontal or vertical component mounting possible.
PC Board
plastic or
metal
Metal
PC Board
plastic or
metal
Metal
SSA™/SSC™/SSS™ SNAP-TOP® STANDOFFS
(See PEM® Bulletin SSA)
• Spring action holds PC Boards and subassemblies securely, while allowing for quick removal.
• Screws and other threaded hardware are eliminated.
PC Board
plastic or
metal
Metal
For more information on these and other PEM products, visit our PEMNET™ Resource Center at www.pemnet.com
PennEngineering • www.pemnet.com K-23
FASTENERS FOR USE WITH PC BOARDS
All PEM® products meet our stringent quality standards. If you require additional industry or other specific quality certifications, special procedures and/or part
numbers are required. Please contact your local sales office or representative for further information.
Regulatory compliance information is available in Technical Support section of our website. Specifications subject to change without notice. See our website for the
most current version of this bulletin.
North America: Danboro, Pennsylvania USA • E-mail: info@pemnet.com • Tel: +1-215-766-8853 • 800-237-4736 (USA)
Europe: Galway, Ireland • E-mail: europe@pemnet.com • Tel: +353-91-751714
Asia/Pacific: Singapore • E-mail: singapore@pemnet.com • Tel: +65-6-745-0660
Shanghai, China • E-mail: china@pemnet.com • Tel: +86-21-5868-3688
Visit our PEMNET™ Resource Center at www.pemnet.com • Technical support e-mail: techsupport@pemnet.com
K-24
1/10/22
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
PEM:
KF2-032-ET KF2-256-ET KF2-440-ET KF2-632-ET KF2-832-ET KF2-M2.5-ET SMTSSS-4MM-6ET SMTSSS4MM-8ET SMTSO-M3-8ET SMTSO-M4-2ET SMTSO-M4-8ET SMTSSS-156-12ET SMTSSS-156-8ET SMTSSS4MM-10ET SMTSO-M3-10ET SMTSO-M3-2ET SMTSO-M3-3ET SMTSO-M3-4ET SMTSO-M35-8ET SMTSO-M36ET SMTSO-M2-4ET SMTSO-M25-2ET SMTSO-M25-3ET SMTSO-M25-4ET SMTSO-M25-6ET SMTSO-M25-8ET
SMTSO-M1.6-3ET SMTSO-M1-1ET SMTSO-M1-2ET SMTSO-M1-3ET SMTSO-M2-2ET SMTSO-M2-3ET SMTSOM1.2-3ET SMTSO-M1.4-1ET SMTSO-M1.4-2ET SMTSO-M1.4-3ET SMTSO-M1.6-1ET SMTSO-M1.6-2ET
SMTSOB-M3-6ET SMTSOB-M3-8ET SMTSOB-M4-2ET SMTSOB-M4-8ET SMTSO-M1.2-1ET SMTSO-M1.2-2ET
SMTSOB-M25-6ET SMTSOB-M25-8ET SMTSOB-M3-10ET SMTSOB-M3-2ET SMTSOB-M3-3ET SMTSOB-M3-4ET
SMTSOB-M2-2ET SMTSOB-M2-3ET SMTSOB-M2-4ET SMTSOB-M25-2ET SMTSOB-M25-3ET SMTSOB-M254ET SMTSOB-440-2ET SMTSOB-440-4ET SMTSOB-440-8ET SMTSOB-632-2ET SMTSOB-632-4ET SMTSOB632-8ET SMTSOB-256-4ET SMTSOB-3.6-10ET SMTSOB-3.6-4ET SMTSOB-3.6-6ET SMTSOB-4.2-3ET SMTSOB440-12ET SMTSOB-116-2ET SMTSOB-116-4ET SMTSOB-116-8ET SMTSOB-143-4ET SMTSOB-143-8ET
SMTSOB-256-2ET SMTSO-440-8ET SMTSO-632-12ET SMTSO-632-2ET SMTSO-632-4ET SMTSO-632-8ET
SMTSOB-116-12ET SMTSO-3.6-4ET SMTSO-3.6-6ET SMTSO-3.6-8ET SMTSO-440-12ET SMTSO-440-2ET
SMTSO-440-4ET SMTSO-143-4ET SMTSO-143-8ET SMTSO-256-2ET SMTSO-256-4ET SMTSO-3.6-10ET
SMTSO-3.6-3ET SMTSO-080-4ET SMTSO-116-12ET SMTSO-116-2ET SMTSO-116-4ET SMTSO-116-8ET
SMTSO-143-12ET SMTPR-6-1ET SMTRA440-9-6ET
工商网监
湘ICP备2023018690号
