I used to have parts thread rolled or knurled to what ever size needed . If
the thread rolling company has the dies in stock the prices are not to dear.
They can grind and roll any size needed if they have correct dies. I used
two places in Los Angeles area that I can still think of.
One was Ace Grinding and another was Downey Grinding. One part was 1.25
dia.316 SS that I had knurled many times.and the knurl always came out
better
then off of my CNC lathe. And the threads also are stronger then cut
threads.

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