How to Use an Allen Wrench Like a Pro. How to Use an Allen Wrench Like a Pro. It's a simple tool that only grows more useful in experienced hands. By Joseph Truini Updated: Apr 25, 2020 10:00 AM EDT.

If your wrench handle is one foot long and you push on it with 25 lbs. of force, you are tightening the bolt with 25 ft.-lbs. of torque. There are two ways to measure it: make a wild guess or use ...

With a spec range from 7-100 lb-ft, the smaller 3/8-inch torque-angle wrench may be better choice if you don't have an 8-lug truck requiring massive torque at each corner. 0:00 / 0:00.