I use torque wrenches everyday building engines, their use is to 'stretch' the thread a pre-determined amount, set by the BOLT/STUD/NUT manufacturer.
Your Sendero can be torqued consistently using a 'T' handle allen wrench, as soon as the bolt stops turning and the handle twists further, the torque applied will be the same every time. I have checked this numerous times with my torque wrench, it gives the same reading time after time.
I also swap out all rifle action screws with allen key type if they don't come with them.
Cheers.
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