On 5/29/2012 12:05 PM, Encore Pianos wrote: > This is what you need, all from Fastenal: Idea from Ron Nossaman > originally I believe. > > 3/8"-16 x 4" Black Oxide Alloy Steel Cup Point Socket Set Screw > > 3/8-16 Nickel Plated Acorn Nut > > 3/8"-16 Zinc Finish Case Hardened Serrated Flange Nut > > The Flange nut is inverted and epoxied in place along the length of > the Allen set screw so that the shank will protrude far enough above > the plate so that you can turn down the acorn nut without bottoming > out before touching the top of the plate. Almost. It's a lock nut, and epoxy isn't needed, though I use a drop of thread locker for insurance when I assemble them. Hint: use a relatively small diameter lock nut and counter bore the soundboard so it will screw down flush before installing. It's no fun having the plate still 1/2 a lock nut's thickness too high while you're setting bearing with a laminated cap pinned bridge installed. Ron N
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