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Grease gun barrel nut thread size


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  • 6 months later...

Does anyone know the thread size specification? I can measure one, but I'd like to know what the blueprint says.

Just saw this from last summer. Need to chase the barrel threads in a Medea partially welded together pair of M3 halves. Did you acquire a 1.75 x 16 Unef tap or die? TIA

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we made our own thread tap,, turned and threaded a piece of oil hardning steel to correct dims, dardened with tourch and quench in oil,, worked fine for a restore threads,,, me thinks an original tap this size would cost a fortune and take forever to get if at all,, get friendly with a local job shop and expect to pay 75- 100 dollars an hour,, just sayn

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Asking the community for the tap I need since there must be someone who has needed one for work on the M3/M3a1 receiver barrel threads.
Purchase of large and odd spec taps and dies is easy and incredibly cheap from China. Over the last ten years or so, I have acquired half a dozen large sized taps and dies for as little as $30 each plus shipping from Chinese manufacturers. A good example: I got a tap for the barrel ring threads in the receiver of a 1914 Digger for about $48, total, as I recall.
Since you can make one, how about making me a short 1.75"x16 TPI Unef tap just for chasing the threads? I have an M3a1 receiver front end with the threaded barrel ring as well as threaded breech end of a barrel for specs.......

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