Who the HECK.......
CJim7
Crazy Sr. Respected Jeeper
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- Twin Falls ID
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- '84 CJ7 - 430hp 401 on propane - T18a/D300 twinsticked, Superior axles, Lockers, full boatsides, Warn 8274, OBA, 36" TSL's.
they can take a higher load on the threads than a course threaded bolt, much like 35 spline axles are much stronger than 19 spline ones!
Or, they just do it to torture you!
Aren't fine thread bolts able to hold a specific torque value without loosening better than a coarse thread?
Higher surface contact area per diameter = higher stress leveling.yes ^^^ that was always my understanding they are stronger. more threads more bite.
Fine thread bolts and nuts are less likely to back off and can be torqued more accurately.I run fine thread with nylon lock nuts on everything I can on my old Harley and I dont have any problems with things loosing up.
I have a 1972 FLH that has been through 4 wives and still loves meOh yeah, Nylok nuts, fine thread bolts and old Harleys are made to go together.
So what year do you have (old Harley wise)
Lets not forget about after market suspension U bolts. Fine thread, lock nuts, on your back. over head and about three feet longer than they need to be. The reason I own compressed air and an air ratchet.
They don't need to be as they're not practical for that application. The coarse threads matched to the diameter and grade of the bolt easily exceed the required torque loads. The finer threads would be complete overkill and a waste of time/money.I almost wonder why headbolts aren't fine thread...
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