FASTENER IDENTIFICATION - Continued
Then, measure the length of the torque wrench. Measure the wrench from the center of the handle to the center of
the connecting point with the socket or adapter.
Calculate what the dial indicator or clicker setting should be using the following formula:
Dial indicator or
Torque Wrench Length x Torque Desired
Torque Wrench Length + Extension Length
For Metric Measurement Fasteners
Markings on capscrews, screws, and studs should be obligatory for property classes equal to or higher than 8.8,
preferably on top of the head by indenting or embossing on the side of the head. Marking is required for socket head
capscrews with a nominal diameter greater than M5. Studs must be marked at nut end.
Figure 3. Metric Fastener Markings.