PRODUCT BROCHURE
TBX PRESET PRECISION BREAK-OVER WRENCH
“HAND ME
THE MOUNTZ!”
Mountz TBX Preset Break-Over Wrench
SAFEGUARDING AGAINST
FASTENING FAILURES
• Torque limiting wrench improves control of the tightening process
• Reduces the risk of both over and under-tightening
• Break-over mechanism provides a visual indicator of achieving torque setting
• Interchangeable end fitting design—selectable head types and sizes
• Calibration life 4x ISO standards
• Unmatched quality you can count on
QUALITY IS AT THE HEART
OF EVERYTHING WE DO
Relied on by leaders in communications, aviation,
automotive, medical and electronic-all industries
in which process control is critical.
2
Reliable break-over technology in the palm
of your hand
QUALITY TORQUE WRENCH DELIVERS CONFIDENCE AT EVERY TURN
Engineered and assembled in Silicon Valley, the Mountz TBX line
of precision preset break-over wrenches ensures consistent process and quality control. The wrench's repeatability, traceability,
and precision safeguards against fastening failures.
When under- or over-torquing puts your products at risk, Mountz
break-over wrenches help support your quality control process by
empowering an operator to prevent assembly errors. Designed
to tighten various types of fasteners accurately, the break-over
wrench informs the operator when the proper torque is reached
by deflecting at the pivot point near the tool's end. The unique
break-over mechanism gives an operator ample time to react
once the target torque is achieved and stop applying additional
force to the fastener. Our break-over technology increases the
consistency of torque delivered and joint reliability.
Execute fastening tasks with precision
and repeatability
Mountz TBX tools stay in calibration
4X longer than the most
stringent industry standard
(ISO 6789). The torque
limiting wrench is
engineered with a breakover mechanism that
enables manufacturers
to achieve and maintain process reliability.
You can give Mountz
TBX wrenches to any
operator and have the
confidence that he/she
will deliver the correct
torque, time after time.
3
Preset break-over torque wrench
improves productivity
Modern, effective preset torque wrenches
improve productivity by consistently applying
the correct torque value to each fastener.
Preset break-over wrenches are ideal for
fastening applications where operators repeatedly assemble parts at the same torque setting.
A preset wrench is similar to setting an alarm
clock to signal the achievement of a selected
time. The wrench is pre-set to the application’s
required torque value. The tool breaks over, providing a visual indicator once torque is achieved.
A preset wrench doesn’t have an external torque
adjustment scale. These tools have an internal
torque adjustment mechanism for setting the
torque value and preset using a hex key and
a torque analyzer. The locking mechanism
prevents accidental torque setting changes.
Once the tool is set, the wrench's end cap is
sealed with a calibration sticker and ready to
be used. However, if the preset torque value
needs to be changed for a new fastening
application, the flexible tool can easily be
adjusted to a new preset torque value.
TBX-12
4
TBX-25
PRODUCT OVERVIEW
FEATURE
Cycles Before
Calibration
Break-Over
Technology
WHAT IS IT?
ADVANTAGE
END USER BENEFIT
• ISO 6789-1:2017 calls for
• Exceeds standards
• Mountz 4x ISO standards:
• Longer time on the
maximum of 5,000 torque
applications
• Limits the amount of torque
applied
• Break-over mechanism
deflects at a pivot point near
the tool’s end fitting
Locking
Mechanism
• Internal mechanism prevents
accidental torque setting
changes
20,000 cycles before
re-calibration
• Prevent fastening errors
• Tool’s built-in hinge provides
a visual indicator of achieving
the torque setting
• Avoids torque setting drift
• Prevents incidental
adjustments
• Accurate and repeatable
torque setting
Preset Tool
• Internal torque adjustment
• Tool is set to a designated
• Non-graduated setting
• Correct torque value is
• Anodized aluminum end cap
• Durable and doesn’t strip out
mechanism
torque tool
Metal End Cap
for all models
torque value
consistently applied
like plastic
production line
• Reduces calibration budget
and down time
• Precision and repeatability
• Mitigate under- or overtorquing events
• Boost project ROI
• Ensures fastening precision
and accuracy
• Reliable process control
• Longer period before
re-calibration
• Enhance process reliability
• Improve production quality
• Increase productivity
• Reduce scrap rates
• Improve operator's efficiency
• Reduce discomfort, fatigue,
and risk of injury
Ergonomics
• Ergonomic handle
• Cushion, non-slip grip
• Improve operator's efficiency
• Reduce discomfort, fatigue,
and risk of injury
Interchangeable
Heads
• The end fitting of the wrench
allows different head types
and sizes to be exchanged and
attached
• Compatible for various
applications from open end
spanner, box end, flare end,
hex key, or a ratchet head with
a single wrench.
• Configure the head type and
size per fastening application
• Flexibility to replace and
change
• Custom design heads available
upon request
• Enables the tool to fit in
restricted space applications
5
MOUNTZ TBX PRESET
BREAK-OVER WRENCHES
MODEL
ITEM NO.
TORQUE RANGES
AMERICAN
S.I.
DRIVE SIZE
LENGTH
WEIGHT
BREAK
TBX-12
076815
21.2–106.2 lbf.in
2.4–12 N.m
Type A
6"
0.8 lbs
20° or 90°
TBX-12 ESD
076818
21.2–106.2 lbf.in
2.4–12 N.m
Type A
6"
0.8 lbs
20° or 90°
TBX-25
076816
44.3–221.3 lbf.in
5–25 N.m
Type B
10.4"
1.6 lbs
20°
TBX-25 ESD
076819
44.3–221.3 lbf.in
5–25 N.m
Type B
10.4"
1.6 lbs
20°
Designed and manufactured to meet or exceed
the accuracy and repeatability requirements of
ISO 6789: 2017 (+/- 4% of setting).
Tamper-proof internal adjustment. No external
adjustment scale—must be preset using a
torque analyzer.
6
Interchangeable heads for TBX-12 model type A end fitting
OPEN END HEADS
AMERICAN
BOX END HEADS
METRIC
AMERICAN
METRIC
SIZE
ITEM NO.
SIZE
ITEM NO.
SIZE
ITEM NO.
SIZE
ITEM NO.
3/16"
068605
6 mm
068615
7/32"
068625
7 mm
068631
1/4"
068606
7 mm
068616
1/4"
068626
8 mm
068632
5/16"
068607
8 mm
068617
5/16"
068627
9 mm
068633
3/8"
068608
9 mm
068618
3/8"
068628
10 mm
068634
7/16"
068609
10 mm
068619
7/16"
068629
11 mm
068635
1/2"
068610
11 mm
068620
1/2"
068630
12 mm
068636
9/16"
068611
12 mm
068621
–
–
13 mm
068637
5/8"
068612
13 mm
068622
11/16"
068613
14 mm
068623
3/4"
068614
15 mm
068624
HEX KEY HEADS
AMERICAN
METRIC
FIXED SQUARE DRIVE HEADS
RATCHET HEAD
AMERICAN
AMERICAN
SIZE
ITEM NO.
SIZE
ITEM NO.
SIZE
ITEM NO.
SIZE
ITEM NO.
1/16"
068639
1.5 mm
068648
1/4" Sq. Dr.
068655
1/4" Sq. Dr.
068599
5/64"
068640
2 mm
068649
3/8" Sq. Dr.
068656
3/32"
068641
2.5 mm
068651
7/64"
068642
3 mm
068652
1/8"
068643
4 mm
068653
9/64"
068644
5 mm
068654
5/32"
068645
–
–
3/16"
068646
–
–
1/4"
068647
–
–
BOX RATCHET HEAD
AMERICAN
SIZE
ITEM NO.
1/4" Box End
068598
BLANK END HEAD
SIZE
ITEM NO.
Blank End
068603
7
Interchangeable heads for TBX-25 model type B end fitting
OPEN END HEADS
AMERICAN
METRIC
AMERICAN
METRIC
SIZE
ITEM NO.
SIZE
ITEM NO.
SIZE
ITEM NO.
SIZE
ITEM NO.
1/4"
068657
7 mm
068673
1/4"
068684
9 mm
068694
5/16"
068658
8 mm
068674
5/16"
068685
13 mm
068695
3/8"
068659
9 mm
068675
3/8"
068686
17 mm
068696
7/16"
068660
10 mm
068676
7/16"
068687
18 mm
068697
1/2"
068661
11 mm
068677
1/2"
068688
–
–
9/16"
068662
12 mm
068678
9/16"
068689
–
–
5/8"
068663
13 mm
068679
5/8"
068690
–
–
11/16"
068664
14 mm
068680
3/4"
068691
–
–
3/4"
068665
17 mm
068681
7/8"
068692
–
–
13/16"
068666
19 mm
068682
15/16"
068693
–
–
7/8"
068667
22 mm
068683
15/16"
068668
–
–
1"
068669
–
–
1 1/16"
068670
–
–
1 1/8"
068671
–
–
1 1/4"
068672
–
–
RATCHET HEAD
AMERICAN
8
BOX END HEADS
SIZE
ITEM NO.
3/8" Sq. Dr.
068698
1/2" Sq. Dr.
068699
BLANK END HEAD
SIZE
ITEM NO.
Blank End
068604
At Mountz, we take great pride in
knowing that our advanced torque tools
will end up in the right hands.
9
ABOUT MOUNTZ
Mountz, The Torque Tool Specialists®, has been a leader in the torque tool industry
for more than 55 years. Engineered in the Silicon Valley and serving the globe,
Mountz focuses on delivering high-quality torque products, services, and solutions
to ensure customers can always proceed with confidence. We are committed to
forging a safer world through precision and accuracy, and by innovating every day.
mountztorque.com
SILICON VALLEY HEADQUARTERS
INTERNATIONAL
AND SERVICE CENTER
For inquiries outside of the USA,
Canada, and Mexico, please contact:
international@mountztorque.com
Phone: +44 1428 741756
1080 N. 11th St., San Jose, CA 95112
408-292-2214 / M–F 6am–5pm PST
ALABAMA DISTRIBUTION
AND SERVICE CENTER
19051 Underwood Road, Foley, AL 36535
Copyright © 2021 Mountz Inc. All Rights Reserved. V1/092821
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