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mrerick · 09-26-2022, 10:15 AM

The grip screws use a "Whitworth" British thread profile. it changes the angle of the thread.

https://www.boltscience.com/pages/screw4.htm

https://www.practicalmachinist.com/f...screws.221376/

You will find the taps listed in a google search. Sometimes the taps are on Ebay.

Here is the fabrication specification for the screws (courtesy of John S.'s blueprint files):

09-26-2022, 10:15 AM	#3
mrerick Super Moderator - Patron LugerForum Life Patron Join Date: Dec 2009 Location: Eastern North Carolina, USA Posts: 3,894 Thanks: 1,364 Thanked 3,084 Times in 1,500 Posts	The grip screws use a "Whitworth" British thread profile. it changes the angle of the thread. https://www.boltscience.com/pages/screw4.htm https://www.practicalmachinist.com/f...screws.221376/ You will find the taps listed in a google search. Sometimes the taps are on Ebay. Here is the fabrication specification for the screws (courtesy of John S.'s blueprint files): Attached Thumbnails __________________ Igitur si vis pacem, para bellum - - Therefore if you want peace, prepare for war.