GN 251.6
Setting bolts
with retaining magnet
1
2
d 1*
l1
M 6
12
16
20
25
M 8
16
20
25
30
M 10
20
25
30
M 12
25
30
M 16
30
40
d2
e≈
k 1 −1
k2
l 2 max.
s
Nominal
magnetic forces in N
30
10
11
4
3,2
3
10
25
40
13
14,4
5,3
4
3,7
13
50
40
50
17
17,8
6,4
5
4,5
17
75
40
50
60
19
20
7,5
6
5,2
19
110
50
60
80
24
26,8
10
8
6
24
145
* Thread: nut mobility
Specification
• Screw Steel
-- Tensile strength class 5.8
-- zinc plated, blue passivated
• Hexagon nut Steel
-- Tensile strength class 04
-- zinc plated, blue passivated
3
Information
Setting bolts GN 251.6 with retaining magnets are a shielded magnetic
system.
Suitable e.g. as workpiece stop, with the magnet holding the workpiece
in place.
The lock nut (included) can be used to secure the stop screw after
positioning.
• Material of the magnet
see also...
NdFeB
ND
• More information to retaining magnets → Page 1380 ff.
Neodymium, iron, boron
• Setting bolts GN 251 (without magnet) → Page 838
temperature resistant up to 80 °C
• Strength values of screws → Page 1481
• RoHS
How to order
1
2
3
GN 251.6-M6-12-ND
Page 1408 | 3.9 Holding with magnets
1
d1
2
l1
3
Material of the magnet
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