I have an old (1924) Reising semi-aoto .22 that I'm trying to clean-up the screws and holes to mount the grips. From my limited knowledge I've measured the screws at .125" diameter with 56 tpi. Would this be a 5-56NF? From my searches I'm finding that taps and dies are non-existent for this size. Can anyone help me find this or tell me if I'm off base in my sizing?
That is a standard but seldom used U. S. Standard thread. High Standard used that thread for their grip screws and side plate screws. I believe Brownells sells the old High Standard grip screws. You might contact them.
besides Brownells screw kit and good dies and taps years ago i went to Boeing surplus in wichita and they had big drums of screws/??? on pallets and you dipped out scoops of however much you wanted and it sold by the pound ..has served me well for years