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August 6, 2008
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Anyone know what thread size these forearm screws are? I thought 3/16×36 but can’t find a sizer to check.
March 12, 2008
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Mike, they are .185″ x 35-1/2 tpi x .172″ long(under head to end of screw).
Steve
August 6, 2008
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Where will I find a tap that size? Or a way to clean the threads?
January 24, 2013
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Dont think you will ever find a tap that size, it’s an oddball. You might have one made for a nice chunk of change.
Another option would be to use a 10×36 tap which is fairly available.
MAJ dia of a #10 is .184, and 35 1/2 vs 36 on short screw, you may never notice the difference.
Anybody see a problem with that?
Mike
March 12, 2008
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A 10-36 is a special also, and will probably cost at least $30 or so, however it is readily available. I think Mike is correct though, it will probably do the job for such a short engagement length.
Steve
the forearm screws for the 1890 and 1906 is a 10-32 thread. Homestead parts has tap for 8.75 part number 541C
March 12, 2008
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Hmm…..Winchester blueprint must be wrong!
Steve
April 23, 2012
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10-36 is the front Tang sight screw as well. A standard 10-32 screw will go in a few turns before getting tight , some 10-32 s have been forced in , and others have used a standard , and common 10-32 tap to chase out threads, so they wouldnt have to worry about getting the oddball correct screw
Phil
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