I'd bet it's 1/8" (very fine). I ordered a pair of 6100x2's from Aircraft Spruce today for $.44 each. They'll ship on Monday. Thanks again.

I checked the dimensions of the ones I ordered vs. what I took out and found that the thread went a bit deeper on the new part. That should solve the problem I had with the old one.


Jerry Acheson
Indianapolis, IN
57 Chevy 3100