retapping two screw holes on 441

[esantoro]

Ed, the pdf chart you posted listed a #6-40 NF screw. NF stands for national fine, which as I remember is a screw with a #6 diameter but with 40 threads per inch. Natonal course have less threads per inch but are cut deeper. I've never heard of an 11/64 screw size.

SkipJ

Hi Skip,

Thanks for the heads up. I'm certain that if I try a U.S. screw, it has to be a #8. All I've been able to find in a #8 is a TPI of 32. Now I'll look around for an NF 36.

In metric the closest fit has been an M4 x .7, but the fit is just a smidgen of a tad loose. This screw plus loctite blue (though I'd really like to find Loctite TiteN gap filler for bolts) should work, though now it has become personal to find the perfect screw.

I think I'll try a hobby shop today.

ed