Thread Pitch Question

[Motorcop]

Does anyone know what the thread pitch pattern is for the firing pin spring plug on a Winchester 52B? It may be the same pitch on the "C" model 52's also. Thanks.......Rick H.

[barretcreek]

Motor,

I have a 'B'. If no one more knowledgeable pipes up I'll dig it out and try to figure it out. Not sure what part you are referring to but Numrich should have a drawing.

[Motorcop]

Thanks for the reply. The part I am referring to is the "cap" that screws into the back of the firing pin. I am guessing it's a non-conventional thread pitch but I can't tell for sure because the threads on mine are messed up from being over tightened. On the Numrich schematic for the Model 52 "C" it is item number 23. It appears that these plugs are different for the 52 "B" and 52 "C" as they have different part numbers on the Numrich website.

Rick H.