CMP Krag Barrel: Sight Screws

[Marksman]

The rear sight screw holes on the new CMP Krag barrels are drilled and tapped for 8-32 threaded screws, whereas the original screws have a smaller metric thread. Does anyone know if anyone is making screws with 8-32 threads suitable for mounting a m1901 sight on a new CMP Krag barrel?

Information

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[andiarisaka]

Use allen head screws you should be able to find one with a big enough head that you can turn it down to the proper diameter to be the pivot point for the sight, meaning the front screw.

[ssgross]

Just in case anyone stumbles here like I did...new production screws can be had at S&S
https://www.ssfirearms.com/products.asp?cat=124&pg=9

[mark1]

If you Google "krag rear sight screw thread size" there is a good discussion on the threads.

[butlersrangers]

FWIW - I am not aware of anyone who specifically makes Krag style rear-sight screws for the 8-32 t.p.i. screw-holes used on the Criterion barrels.

Looking up the dimensions for the 8-32 screw-thread gives a maximum diameter of .1631" and a minimum diameter of .1571", (and of course 32 threads per inch).

The best likely solution (for a Criterion barrel) would be to hand-craft 'replica' screws by reworking 8-32 Allen screws.

In regard to original Krag rear-sight screws, the Frankford Arsenal (1902) Tap & Die set contained a Die and Tap for .156" X 30 t.p.i.

I measured an original front screw from a Krag 1901 rear-sight, this morning. The maximum thread diameter was .160" X 30 t.p.i.