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All Springer/NP/PCP Air Gun Discussion General > Machine Shop Talk & AG Parts Machining

Threads and barrel sizes

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PakProtector:
Doug's custom 30 cal, TJ's marauder barrel: 9/16-32.
cheers,
Douglas

Have a look on the interweb, fine thread taps are easy to find, and not so much money. I don't like disturbing the steel at, and just before the muzzle, so fine threads to cut, and a tap for the muffler nut/mount.

Paul Stakun:
What is the thread size of FX brass transfer ports?  I think they are all the same for all calibers, but I'm specifically interested in the .177.

nervoustrigger:

--- Quote from: Paul Stakun on January 20, 2022, 08:36:33 PM ---What is the thread size of FX brass transfer ports?  I think they are all the same for all calibers, but I'm specifically interested in the .177.

--- End quote ---

From my notes on a .177 Crown:

brass thimble has female M12 x 1.0 thread (threads to steel barrel adapter)
steel barrel adapter has male M13 x 1.0 thread (threads to "barrel" which is really just a tube)

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