310 Expander Plug Thread

[leeenfield]

Does anyone know the thread specs for the 310/Truline Jr expander plug?
Thanks

[Pavogrande]

If I remember correctly most are .395x30 --

[beagle]

From my experiences, I have encountered four different sizes. All of them fine thread. I had my machinist buddy measure the various sizes once and after I had the measurements, he told me to have deep pockets looking for the tap and dies and by gosh, he was right so I forgot the whole thing. I had two .358" expander buttons with different size threads so it's a can of worms.

If you're looking for a specific expander, advertise in "Sawpin' And Sellin'" with the outside thread measurements and you might get lucky./beagle

[Pavogrande]

I think the 10/32 decap rod thread is the only "standard" thread on 310/truline dies --

Yes, I think there are a couple different ones -- I think 44 and 45 pistol are larger and are installed from the bottom of the die --
OP, what size are you talking about -- I can probably measure one of mine for you --

[Wayne Smith]

Contact the 310 Shop and find out if he has or makes what you need.