Thanks for posting that Chad, but what does that mean to me when I am tightening down action, windage and scope ring screws???
I tried hard to read through and understand... I really did... but when I got to about here my head started hurting...
Øm = minor diameter
So, for example, if the minor diameter of a ½-13 thread = .4041
Devide this minor dia. by 2 = .2021 and then square this number = .0408
Multiply this number by pi .0408 x 3.14159 = .1283 square inches.
Multiply that number by 110% (coarse thd.) .1283 x 1.10 = .1411 square inches.
The actual tensile stress area is given as .1419 square inches from the chart. So you can see
that the above method is very close — within 1% of the far more difficult calculation!
I use the FAT torque wrench and I usually exceed the the recommended torque levels. i.e., Rem recommends 65 inch/lbs on the Sendero/HS stock and the FAT wrench recommends 45. I use 65. I use 45 on the NF picatinny windage nuts and 25 on the alloy ring screws. Is this good or bad???
PS, I usually check my windage nuts after a few shots fron the 300 RUM after remounting the scope. Have found one or two a little loose after a few jolts from the boomer.