M14 Gas Cylinder Plug Thread Size [Archive] - Military Surplus Collectors Forums

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kenjay

11-22-2009, 11:30 PM

Hey everyone,

Could anyone help me out and tell me what the thread size is on the gas plug for the M14 (or M1a, I think they're interchangeable between the two)?

Thanks!!
Ken

browningautorifle

11-23-2009, 11:15 AM

I don't know the thread but the parts are interchangeable between M14 and M1A. M1A just lacks the full auto ability.

kenjay

11-24-2009, 07:30 PM

I thought so. Thanks, but still looking for help on the thread size. Anyone?

Ben Hartley

11-25-2009, 10:00 AM

I thought so. Thanks, but still looking for help on the thread size. Anyone?

.5450-40 NS 3A thread
Major Dia: .5450"-.0051"
Minor Dia: .5143 max.

Data found on pg. 284 of:

Kuhnhausen, Jerry. The U.S. .30 Caliber Gas Operated Service Rifles, McCall [ID]: VSP Publishers, 1995.

HTH

Ben Hartley