1/2-5 acme 2G internal thread
1/2-5 acme 2G internal thread
(OP)
I have to cut a 1/2-5 acme thread in 17-4ss. I am having trouble finding taps and thread mills for this thread because the pitch is so coarse for the size. Any suggestions would be greatly appreciated.





RE: 1/2-5 acme 2G internal thread
Perhaps you could talk them into a double-start screw. This would give you the required lead (.200 per rev.) yet would yield normal-depth threads. It would look like a standard 1/2-10 Acme thread, but with a steeper helix.
Don
Kansas City
RE: 1/2-5 acme 2G internal thread
eromlignod is sending you in the correct direction. A good handbook will validate why you are having "trouble"
RE: 1/2-5 acme 2G internal thread
Don
Kansas City
RE: 1/2-5 acme 2G internal thread
Cutting this thread is going to destroy alot of special taps.