Let's try this again.
My 1954 Chevrolet gauges are each attached to the three posts on the underside of the dash with
8-32 nuts (a photo is linked-to below). I like Cletis's idea about using brass knurled nuts .
10-32 nuts might fit but they would be a loose fit.
47-53 gauges might have different posts/nuts and 54/55 GMC gauges are completely different from 54/55 Chevrolet truck gauges.
brillhill18 is referring to a 1954 Chevrolet truck. What are you all referring to?Brian,
I have three 1954 Chevrolet trucks, on some of the posts the threads were badly mangled. I had some threads that were so mangled that I could not remove the nuts without either destroying the nut or destroying the post.
The
8-32 measure I gave above was for a good post with clean threads. I used a stainless steel nut as a test-fit (it fit tightly but it smoothly went up and down the entire length of the post). I then measured the diameter with a bolt gauge and the threads with a thread gauge.
These are 1954/55 Chevrolet truck gauge-cluster attachment posts' nuts. The machine screw in the photo is #8-32. This is a perfect fit and is exactly the same post diameter/thread as on the back of the dash (on all three of my 54 Chevrolet trucks).
Why Chevrolet used this diameter and thread is of minimal interest to me. I do not need a reason - I just use what I find was originally used.
The nuts are not push nuts but
"Pal Nut Capped Washer Self Threader". They are sheet metal
"cap nuts" with a small slit in the top radiating out from the center-opening, most likely to act as locking feature.
