Parker Top Pin Thread Size?
 

Friends:
Do any of you happen to know the correct thread size for the Parker hammerless top pin (the big "screw" under the top lever)?

I think it's 12-28 thread, but I may be wrong.

Thanks in advance.

Best, Kensal

Dave Suponski should be along soon to respond to your question.

Kensal, The top tang screws that I have measured were .200 x 30 TPI

Daze:
Thanks for your insight. I finally managed to check one through a Brownells "screw checker" and it came out 12-28. But my needs are for a GH with No. 2 bbls. Other top pins may be different for other frame sizes. Again, thanks much.

Best, Kensal

Kensal, Thanks for your reply. I checked these screws on an optical comparator. And that is what I came up with. I have a couple of those screw checkers in my box but I have found that on some fine thread pitch's they can be lacking.

Daze:
FYI, the reason I'm checking this is that I've run into my first stripped Parker top pin screw. Some bodger not only stripped the threads off the screw -- but out of the bottom plate too! I need to have the pin thread end welded up a bit, turn it, and re-thread. I managed to save the threads in the plate... I think! I've got a welder who can handle anything.

Best, Kensal