Re: Questions regarding thread diameter and pitch for special design case wtih limited thread length

Hi David,

Thanks for your reply.

How would what you suggest compare as far as cost, to threading ? If I
were not going to use threads, perhaps a slip fit between the rod and
the hole and the use of loc-tite at the joint would be the way to go,
but I think threads are probably my best bet, it's just a matter of
what thread diameter and thread pitch are best.

The rod will have threads on each end.

Also, If I use the method you suggest, where the rod goes into the
hole, I may not be able to put the full 3/8" OD in the hole, and may
still have to neck the rod down, where it goes in the hole, due to
design constraints. Necking the end of the rod down, may also help it
assemble more straight, since the hole does not have much depth.

Also, the base plate has bearings in it, and I cannot deform the
bearing bore with heat, since the bearing bore sizes the bearings and
bearing radial internal clearances. The rod also has a close tolerance
hole machined in it center, along it's longitudinal axis.

Thanks again,
John

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