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David Staten wrote:
What is an appropriate torque value with AN6 bolts/nuts? I have one reference on hand and want to compare notes. I have the "aviation mechanic handbook" 4th ed by Dale Crane that lists two different torque values: one is "nuts tension torque limits" and is 160-190 INCH pounds, but it also lists a "nut shear torque limit" as well of 95-110 INCH pounds.
Rather than make a guess here, would someone with the knowledge spell out for me the difference between those two categories?
A shear nut is about half as thick as a standard nut, and is meant to be used where the bolt is primarily in shear, ie. all the nut is really doing is holding the bolt in the hole. Notice that the value for the shear bolt is approximately half. I doubt your motor mounts that is designed to attach to the firewall with the bolts in shear, so I'd suggest the 160-190 figure.
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