Park Tool Co.
5115 Hadley Ave. N., St. Paul, MN 55128 (USA) www.parktool.com
Specific torque specifications are provided by most com-
ponent manufacturers to prevent over tightening and
under tightening of bolts and nuts. Park Tool TW-5 and
TW-6 Torque Wrenches are high quality, ratcheting, click
type torque wrenches that accurately measure and apply
the proper amount of torque to a bolt or nut.
Torque Wrench Use:
1. Determine required torque for threaded fastener
(consult component manufacturer for recommended
torque specifications).
2. Flip ratchet lever to the right if turning wrench in a
clockwise direction. Flip ratchet lever to the left if
turning wrench in a counter-clockwise direction.
3. Pull locking ring to “unlock” position.
4. Turn locking ring until desired torque setting is dis-
played by cursor (red line) in scale window. For the
TW-5, major graduations on the scale are in two New-
ton Meter increments. For the TW-6, major graduations
on the scale are in four Newton Meter increments.
5. Push locking ring to “lock” position.
6. Install desired bit (not supplied) onto square head of
torque wrench. The TW-5 accepts 1/4” drive bits and
3/8” drive bits (with the included adapter). The TW-6
accepts 3/8” drive bits.
7. Place bit and wrench onto bolt or nut to be tight-
ened. Grasp handle of torque wrench and turn
with steady force until a “click” is heard and/or
felt. Immediately release force from torque wrench
after “click”.
8. Dial torque setting to lowest point on scale after
each use. Also, dial setting to lowest point when
storing torque wrench.
Calibration:
TW-5 and TW-6 Torque Wrenches have
moving parts that may require service after extended
use. The wrench may be returned to Park Tool for inspec-
tion and recalibration at a reasonable charge. Visit www.
parktool.com or contact Park Tool at 651-777-6868 for
additional information.
Accuracy:
The TW-5 and TW-6 are calibrated to be ac-
curate to +/-4%.
Care:
The TW-5 and TW-6 are precision tools and should
be treated with care. Store carefully to avoid damage. Clean
with a dry cloth. Water and solvents should be avoided.
Warranty:
Park Tool Company backs the TW-5 and TW-6
Torque Wrenches with a one-year warranty.
Torque Conversion Table and Formulas:
The TW-5
and TW-6 measure torque in Newton Meters, which is
the force of one Newton on a lever that is one meter
long. A table on each wrench can be used to quickly
convert from Newton Meters to Inch Pounds, another
common unit of measure. Conversion formulas for
converting Newton Meters to Foot Pounds, Inch Pounds,
and Centimeter Kilograms are listed below:
Ratcheting “Click Type” Torque Wrench
TW-5
3-15 Newton Meter range (26-132 Inch Pounds)
TW-6
10-60 Newton Meter range (88-530 Inch Pounds)
© 2013 Park Tool Co.
PARK TOOL® and the color BLUE are registered trademarks of Park Tool Co.
To Convert
To
Multiply by
Inch Pounds
Foot Pounds
0.08333
Inch Pounds
Newton Meters
0.113
Inch Pounds
Centimeter Kilograms
1.1519
Foot Pounds
Inch Pounds
12
Foot Pounds
Newton Meters
1.356
Foot Pounds
Centimeter Kilograms
13.825
Newton Meters
Inch Pounds
8.85
Newton Meters
Foot Pounds
0.7376
Newton Meters
Centimeter Kilograms
10.2
Centimeter Kilograms Inch Pounds
0.8681
Centimeter Kilograms Foot Pounds
0.07233
Centimeter Kilograms Newton Meters
0.09807
TORQUE CONVERSION FORMULAS
For additional information on torque concepts, specifica-
tions, conversion tables, and torque wrench use, visit
www.parktool.com.
N-M
5
9
3
7
11
Ratchet
Lever
Socket
Release
Cursor
Scale
Window
Square Head
Conversion Table
Handle
Locking Ring
Lock
Unlock
