[Shop-talk] Weird machine screw

[Mark Andy]

Howdy,

Ok, I've been sorting out my nuts and bolts.

What can I say, I'm an exciting person.

However, I've run across a mystery bolt.  Its got 32 tpi, but the diameter 
(thread peak to peak) is ~0.147".  That's too big for a 6-32 (max is 
0.137) and not big enough for 8-32 (min is 0.157).

Did they make a 7-32 thread?

Its possible its metric (though the 32 thread guage fits really well) I 
suppose, but the common sizes in that range are 3.5x0.6 (diameter converts 
to 0.138") or 4x.7 (diameter converts to 0.157").

This make sense to anyone?

Mark