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Old 09-27-2013, 07:11 PM
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Default Grip screw threads?

From what I see, it appears that the thread size for current grip threads is 5 x 44. Is that correct? Does anyone have a source for threading dies of that size?
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Old 09-27-2013, 07:29 PM
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That's correct, 5x44. Dies should be widely available.
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Old 09-27-2013, 07:39 PM
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I actually find the taps to be more useful on the grips. link
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Old 09-27-2013, 08:18 PM
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You may find that modern grip-screws are a bit too snug in older (pre-'42) grips. There was a change in thread size by .003 during the war. Chasing the old grips @.122x44 with a current 5x44 tap will open it up just enough to accept the newer screws. Often, repeated removal of the old hardware had the same effect, making the parts interchangeable.
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Old 09-27-2013, 08:37 PM
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5-44 threading dies are listed on Amazon - $6.00. I'm simply planning to make a few up on my lathe rather than buying them, just as sort of a hobby project.

Is 5-44 the correct thread for newer S&W sideplate screws also?

Last edited by DWalt; 09-27-2013 at 08:41 PM.
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Old 09-27-2013, 09:14 PM
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Sideplate screws are 5x44, mainsp strain screw 8x32
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Old 09-27-2013, 10:05 PM
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FYI, other K frame screw sizes are:
5x44 - side plate
4x48 - upper side plate
6x40 - cylinder stop (pre '62)
3x56 - rear sight leaf (pre '93)
6x48 - ". ". ". (Post '93)
6x44 (?) thumb piece screw
8x32 - strain screw
4mm x 0.7 yoke retention system (post '88)
We could use a reliable source for screws. Go for it!
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