Thread engagement length question
Thread engagement length question
(OP)
Hi, I'm new here. I was searching for how much pulling resistance force per mm or inch has a stud engaged in aluminum, but all I can find is about thread stripping resistance, that I think is torsional torque. Please any help here is very appreciate. Thanks for your time !





RE: Thread engagement length question
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RE: Thread engagement length question
A steel bolt can break in a hard plastic block if there are enough threads engaged AND if the block is thick enough to resist springing away (hole deformation).
"I'm that dog who saw a rainbow, only none of the other dogs believed me." from "Kate and Leopold"
RE: Thread engagement length question
RE: Thread engagement length question
But that wasn't your question was it? You wanted to know how much pulling force you could put on a 13mm depth M8 stud in say A356 aluminum that had been heat treated to a T-6 spec (common aftermarket aluminum cylinder head). Another bit of information required would be thread count (corse/fine) or thread pitch (basically the distance from one thread to the next on metric threads). Each one of those threads engauged distribute load and you need to determine what is least; the fastener material elastic limit by diameter, the aluminum load limit disributed by number of threads or the nut's (no, not mine) load limit.
RE: Thread engagement length question
RE: Thread engagement length question