- Always practice safe gun handling procedures when working on firearms.
- Always be sure the firearm being handled is unloaded.
- Most work on firearms should be performed by a qualified gunsmith.
- Perchlorate Material - Special handling may apply, see www.dtsc.ca.gov/hazardouswaste/perchlorate
- This product may contain a CR coin cell lithium battery. The State of California requires the following disclosure
statement: “Perchlorate Material - special handling may apply. See www.dtsc.ca.gov/hazardouswaste/perchlorate”
Before applying torque to any fastener, consider whether the fastener is lubricated or dry/degreased. Lubricated
fasteners require much less torque to achieve consistent clamping power compared to dry un-lubricated fasteners.
Keep in mind that most fasteners used for installing gun accessories are coated with oil to prevent corrosion. This
oil as well as removable thread-locking compounds that are often applied to screw threads should be considered
as lubricant.
NOTE:
The values tabulated below are for high grade (SAE Grade 8 or equivalent) steel fasteners. If you are
unsure about the size or quality of the fastener you are installing, start with a lower torque value and only
increase to the maximum torques listed if you feel comfortable doing so. Bits are considered “use” items
and are not warrantied against bending or breakage.
TORQUE RECOMMENDATIONS:
Nominal
Screw Sizes
6-32 UNC
6-40 UNF
6-48 FINE
8-32 UNC
8-36 UNF
8-40 FINE
10-24 UNC
10-32 UNF
Screw Diameter
at Threads (in)
0.131” - 0.138”
0.157” - 0.164”
0.184” - 0.190”
Common Uses
For These Screws
Commonly used
on scope base
mounts
Commonly used
on scope rings
Commonly used
on scope base
windage screws
Lubricated Fastener
Torque (in.-lbs.)
18 - 20
28 - 30
40 - 45
0.138
0.131
0.164
0.157
0.190
0.184
6-32
6-40
6-48
8-32
8-36
8-40
10-24
10-32
NOTE:
Holding at the target torque setting will cause the speaker to draw more power and may
result in premature low battery life.
NOTE:
It may be difficult for the hearing impaired to detect the high frequency tone produced by the internal
speaker. Using the value displayed on the LCD is the best method to confirm accurate torque application.
8. After use, the Digital F.A.T. Wrench should be turned off and placed in its protective case. The last Units, Display
Mode, and Target Torque Value will be stored in memory and ready to use when the device is turned on again.
NOTE:
If the device is not used for 5 minutes it will automatically turn off to save the battery. When
turned back on, all previous settings will be active.
