Re: Luger grip mold forensics...  ,"More Info
John,
If I remember correctly, This thread is not the standard metric thread because Lugers used the British Whitworth Thread on the grip screws.
I seem to remember that it had something to do with some Automatic Screw Machines invented in England by Whitworth that were so good that the Germans purchased some of these machines to Manufacture Luger Grip Screws.
This thread was designed for high strength,heat treated screws. It was also excellently adapted for use in molded phenolic and bakelite type plastics.
ViggoG
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