In a message dated 97-10-09 16:18:15 EDT, dgibbons@PRESRAY.COM writes: << In theory any bolt only needs 1 or 2 threads to develop full strength. In practice its best to have at 1 diameter of threads sticking out the nut. >> Actually the theory calls for at least 3 threads to make the shear strength of the threads equal to the tensile strength of the stud. Still, 3 threads doens't "seem" enough to be. I too, am comforted by at least one diameter's worth of engagement. Regards, Jim Davis |
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