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Bolt strength in tension?

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Tiger Tim

Well-Known Member
Joined
Apr 26, 2013
Messages
7,058
Location
Thunder Bay
Wasn’t exactly sure which sub forum this belonged in so here it is. Also, I know bolts in tension are sub-optimal but I’m willing to live with it.

My question is actually about the tensile strength of the threads as they are surely not as strong as the shank. One of my too many projects requires the manufacture of around a hundred custom U-bolts of the same width but slightly different lengths. Off the top of my head the longest one is probably no more than 3/4” longer than the shortest. I’d love to just mass produce these things so I have a big box of U-bolts standing by when I need them and for that it would be great if they were all identical and cut to length on installation.

To do that, a bunch would end up with up to 3/4” of threads on the shank side of the nut (they won’t see any shear) and I’m curious if this would cause any issues of strength or if one thread or twenty are the same and just limited to whichever one is the weakest.
 
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