24071, 24072
24071
24072
EN
Original Instructions
Version 1
March 2025
BREAKBACK
TORQUE
WR EN CH
2. Product Introduction
1.1 Product Reference
User Manual for: Breakback Torque Wrench
Stock No: 24071, 24072
Part No: BTW-3/4, BTW-1
1.2 Revisions
Version 1: March 2025
First release
Read this manual in full before using this product and
retain it for future use. Always use the latest version of
the manual. Please visit drapertools.com/manuals for
the latest version.
Contents
1. Preface 2
1.1 Product Reference 2
1.2 Revisions 2
2. Product Introduction 2
2.1 Intended Use 2
2.2 Specication 2
3. Health and Safety Information 3
4. Identication and Unpacking 4
4.1 Product Overview 4
4.2 Packaging 4
5. Assembly Instructions 5
5.1 Assembling the Torque Wrench 5
6. Operating Instructions 5
6.1 Setting the Torque 5
6.2 Using the Torque Wrench 5-6
6.3 Using Socket extensions & Adaptors 6
6.4 Conversion Chart 6
7. Maintenance, Storage and Disposal 7
7.1 General Maintenance and Storage 7
7.2 Calibration 7
8. Warranty 7
2.1 Intended Use
This industrial breakback torque wrench has been
designed to tighten screws, bolts and other xings to
the required torque in a clockwise and anticlockwise
direction.
Any other application beyond the conditions established
for use will be considered misuse. Draper Tools accepts
no responsibility for improper use of this product.
2.2 Specication
Stock No. 24071 24072
Part No. BTW-3/4 BTW-1
Drive size 3/4” 1”
Torque Range
200 – 800Nm
(150 – 600ft-lb)
300 – 1000Nm
(200 – 750ft-lb)
Accuracy (clockwise) +/-4% +/-4%
Application
Tightening
Clockwise/
Anti-clockwise
Clockwise/
Anti-clockwise
Torque Measurement Clockwise only Clockwise only
Head Style
Push through
ratchet
Push through
ratchet
Tooth Count 36T 36T
Overall Length 1310mm 1550mm
This torque wrench is accurate to +/- 4% of the set load
and has been manufactured and tested in accordance to
ISO 6789-1:2017.
1. Preface
– 2 –
3. Health and Safety Information
– 3 –
EN
Important: Read all the Health and Safety instructions
before attempting to operate, maintain or repair this
product. Failure to follow these instructions may result in
damage to the workpiece, tool or cause it to require
recalibration.
• Important: ALWAYS read the manufacturer’s
instructions for the recommended torque settings.
Incorrect torque settings can result in serious damage
or injury when the workpiece is used.
• This torque wrench is a precision tool. It must NOT be
used to pry or loosen nuts, bolts or xings; to separate
materials; as a substitute for ratchet spanners or
hammers; or as a breaker bar. Used in such a way will
damage the calibration setting and invalidate your
warranty.
• DO NOT interfere with or loosen the lock nut as this
will aect the calibration. If it becomes loose do not
use the torque wrench.
• Before rst use, test the torque wrench on non-critical
xings to familiarise yourself with the responses that
indicate the congured torque is reached.
Important: Some responses may be less noticeable at
lower torques.
• ALWAYS select the correct size and type of socket for
use with the xing.
• NEVER set the torque wrench beyond its maximum or
minimum settings as this may damage the internal
spring and distort the calibration.
• ALWAYS return the torque wrench to its minimum
setting when not in use. − Failure to do this will
weaken the internal spring and distort the calibration
of the tool. Damage caused to the tool in this way is
not covered by your warranty.
• DO NOT over-tighten xings as this may result in
breakages.
• Stop applying force as soon as a noticeable ‘Click’ is
heard.
• DO NOT turn the adjustment nut (6) anti-clockwise
while setting the torque as this may cause incorrect
setting of the required torque.
• DO NOT place tubes over the handle as this will result
in damage to the torque wrench.
• Observe all standard safety precautions and good
practices when in a workshop environment.
• Inspect the product before every use for cracked,
corroded or broken parts.
WARNING!
DO NOT use this product if it is
damaged in any way. Contact Draper Tools for
repair and replacement options.
• Use this product only for its intended purpose and do
not modify it in any way.
4. Identication and Unpacking
4.2 Packaging
Keep the product packaging for the duration of the
warranty period for reference should the product need to
be returned for repair.
WARNING!
Keep packaging materials out of
reach of children. Dispose of packaging
correctly and responsibly and in accordance
with local regulations.
1. Push through drive square
2. Head unit section
3. Linkage mechanism
4. Handle shaft reaction point
5. Torque scale
6. Torque adjustment nut
7. Grip handle
8. Breakback mechanism
9. Torque adjustment handle
10. Storage box
Please visit drapertools.com for our full range of accessories and consumables.
– 4 –
Carefully remove the product from the packaging and examine it for any signs of damage that may have occurred
during shipment. If any part is damaged or missing, do not attempt to use the product. Please contact the Draper
Helpline; contact details can be found at the back of this manual.
4.1 Product Overview
8
7
6
5
4
9
3
2
10
1
5. Assembly Instructions
5.1 Assembling the Torque Wrench
1 Fig.
• Connect the drive head section (2) to the handle shaft
section (4) by aligning the pin (A) with the hole (B).
Then press together.
• To separate for storage - Push the pin (A) in and then
pull out the drive head section.
6. Operating Instructions
6.1 Setting the Torque
2 Fig.
1. Fit the adjustment handle (9) to the torque nut (6).
3 Fig.
2. Set the required torque by turning the handle (9)
clockwise only until the selected torque aligns with
the red index line on the torque scale (5).
• DO NOT set torque coming down the range.
• When the torque wrench is not in use, ensure the
adjustment is at the lowest torque setting.
6.2 Using the Torque Wrench
Important:
• Always use the correct size socket.
• Apply a consistent controlled force on the handle (7) .
When the required torque is reached, this will be
indicated by the following:
− Touch: The handle will be felt to “break away” at
the point of the set torque.
− Visually: The handle will be seen to “break away”
at the point of the set torque.
• The breakback mechanism (8) gives the user a clear
indication that the required torque has been reached.
Note: The mechanism pivots back at the joint to
indicate the preset torque has been achieved.
Note: Responses may be less perceptible at lower
torques.
WARNING!
Once the set torque is reached, DO
NOT continue to turn the torque wrench as this
will deliver an incorrect torque and may damage
the parts. Only apply preset torque once.
– 5 –
EN
2
B
A
4
6
9
5
– 6 –
1. Select the required socket or bit and adaptors as
appropriate and t onto the square drive (1).
2. Set the operation direction by pushing the drive
square block (1) through the head. Then apply the
force in the direction indicated by the arrow marked
on the drive head section.
4 Fig.
3. Set the torque; see section 6.1.
4. Place the bit or socket onto the xing and apply
controlled consistent force in the desired direction.
5. When the set torque has been reached, the tool will
exhibit a tangible and visual response.
6. Carefully remove the wrench from the xing.
6.4 Conversion Chart
mN/m
millinewton-
metre
cN/m
centinewton-
metre
N/m
newton-
metre
daN/m
decanewton-
metre
cm/kg
centimetre-
kg
m/kg
metre-
kg
in-oz
inch-
ounce
in-lb
inch-
pound
ft-lb
foot-
pound
1mN/m
1cN/m
1N/m
1daN/m
1
10
1000
10000
0.1
1
100
1000
0.001
0.01
1
10
0.0001
0.001
0.1
1
0.0102
0.102
10.2
102
0.000102
0.00102
0.102
1.02
0.1416
1.416
141.6
1416
0.00885
0.0885
8.85
88.5
0.000738
0.00738
0.738
7.38
1cm/kg
1m/kg
98
9810
9.8
981
0.098
9.81
0.0098
0.98
1
100
0.01
1
13.9
1390
0.868
86.8
0.0723
7.23
lin-oz
lin/lb
lft-lb
7.06
112.9
1355
0.706
11.29
35
0.00706
0.1129
1.355
0.0007
0.01129
0.1135
0.072
1.152
13.8
0.00072
0.0115
0.138
1
0.063
0.0052
16
1
0.083
192
12
1
6.3 Using Socket extensions & Adaptors
• When using a socket extension or adaptor to increase
the eective length of the wrench the output torque
value will change.
• The length of the extension/adaptor/wrench and
variation in hand position will aect the accuracy of
the calculation below.
• To calculate the new torque output use the following
equation:
A = L+C X B
L
A = Torque exerted at
end of the adaptor.
B = Scale reading
C = Length of extension
or adaptor.
L = Distance between
square drive and
hand position.
1
5 Fig.
L
C
A
B
7. Maintenance, Storage and Disposal
– 7 –
EN
7.1 General Maintenance and Storage
Important: A torque wrench is a precision tool. Failure to
calibrate your tool regularly or to store correctly will
constitute misuse and invalidate your warranty.
• The torque wrench is lubricated for life and should not
be oiled. The only exception is the head which may be
lubricated as needed for smooth operation.
• Keep the product free from grease, chemicals and
other substances to prevent damage from corrosion.
• Wipe the wrench with a dry cloth only.
• DO NOT use solvents or chemicals that may interfere
with the internal lubrication.
• Store this product in the storage case supplied, in a
clean and dry location, out of direct sunlight and out
of reach of children.
• ALWAYS return the torque wrench to its lowest setting
before storage. Failure to do this will weaken the
internal springs and distort the calibration of the tool.
− Frequently used tools should be calibrated more
often.
• NEVER attempt to repair or adjust this product.
Servicing, repairs and calibration must be carried out
ONLY by qualied and authorised service agents.
• If the torque wrench fails to function correctly for any
of the following reasons, return the tool to an
authorised Draper Tools agent:
− The ratchet fails to function.
− The handle lock fails to function.
− The handle does not break away at the set torque.
• At the end of its working life, dispose of the product
responsibly and in line with local regulations; recycle
where possible.
7.2 Calibration
• Have the torque wrench calibrated at least once a year or
after approximately 5000 cycles by a certied calibration
centre. For the rst recalibration, the period of validity
starts with user’s rst operation of the torque tool.
• Torque tools are classied as test devices. If a
calibration routine is required, the calibration interval
shall be chosen on the basis of the factors of
operation such as required accuracy, frequency of
use, typical load during operation as well as ambient
conditions during operation and storage conditions.
• The interval should be decided according to the user’s
procedures for the control of test devices and by the
requirements of the user.
• The torque tool shall be recalibrated when it has been
subjected to an overload greater than 125% of maximum
rated load and after repair, or after any improper handling
which might inuence any errors in measurement.
NOTE: the recalibration routine for the torque wrench is
NOT covered by the product warranty.
8. Warranty
Should the tool develop a fault, return the complete tool
to your nearest distributor or contact Draper Tools
directly. Proof of purchase must be provided.
If, upon inspection, it is found that the fault occurring is
due to defective materials or workmanship, repairs will
be carried out free of charge. This warranty covers parts
and labour for the lifetime of the product. However, if the
tools are hired out, the warranty period is 90 days from
the date of purchase.
This warranty does not apply to any consumable parts,
batteries or normal wear and tear, nor does it cover any
damage caused by misuse, careless or unsafe handling,
alterations, accidents, or repairs attempted or made by
any personnel other than the authorised Draper Tools
repair agent.
Visit drapertools.com/warranty for full details.
© Published by Draper Tools Limited© Published by Draper Tools Limited
Delta International
Delta International BV
Oude Graaf 8
6002 NL
Weert
Netherlands
Contact Details
Draper Tools
Draper Tools Limited
Hursley Road
Chandler’s Ford
Eastleigh
Hampshire
SO53 1YF
UK
Website: drapertools.com
Email: [email protected]
Product Helpline: +44 (0) 23 8049 4344
Telephone Sales Desk: +44 (0) 23 8049 4333
General Enquiries: +44 (0) 23 8026 6355
Please contact the Draper Tools Product Helpline for repair and servicing enquiries.
