[pianotech] Brass Rail

Ron Nossaman rnossaman at cox.net
Sun Sep 19 12:13:32 MDT 2010


On 9/19/2010 12:25 PM, John Ross wrote:
> Hi Joe,
> I have forced the screw to rethread, but thought if the proper die was available, I would buy it.
> Thanks.
> John Ross

Hi John,
It's a #4 screw, but a non-standard thread pitch. I don't have a thread 
gauge that goes finer than 40tpi, and these screws seem to be a finer 
thread than that. They're somewhere around 42tpi, I think. If they exist 
anywhere in the world new, I sure don't know where it would be unless 
someone makes a M2.5 x .6 metric screw.

Ron N


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