I misplaced my thread guage. Well I obviously put it in a safe place, and forgot where it was. I probably won't get around to buying the tap and die, but now the information is out there, for others to follow through. Great list this, a wealth of knowledge, freely shared. John Ross Windsor, Nova Scotia On 2010-09-19, at 6:54 PM, Ron Nossaman wrote: > On 9/19/2010 3:49 PM, John Ross wrote: >> Thank you very much, Roger. >> Your letter explains the dilemma, with apparently no real fix, other than do the best you can. >> APSCO was where I used to get the exact replacements. >> Tuner's Supply also supplied the correct ones. >> 3-48 is a size that Micro Mark carries, so I guess that will be the closest. >> I seem to remember that Mr Schandler (sp) of APSCO continued selling screws after Schaff bought him out. >> Does anyone know if he still does? >> John Ross > > Hi John, > Yep, I looked at the wrong line. Screwed up, sorry. It is indeed a #3, but it's neither 48, nor 56 threads per inch. My 26 tpi gauge neatly and precisely fits every other thread, which makes it 52tpi. At least that's what my jar full of leftovers are. > > That makes the closest match M3 x .5, which is 0.020" (0.5mm) bigger than the original, at about 50.8 tpi, and there are both screws and taps available in this size. > > Ron N
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