Thread: Extractor retention screw
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Unread 10-11-2025, 08:35 PM   #3
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edgarspencer
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40 tpi. I'm going with #4, but I can't find my gauge, and a 6-40 won't start.

edit. Chart says Nominal is .112, and the screw I'm holding is .112, so yup, 4-40
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