and use a FLAT WASHER FIRST,then a Split or Lock Washer, then 5/16' HEX nut......Good luck !!! isaac On Oct 26, 2009, at 4:07 PM, Scott Gray wrote: > 5/16" standard thread and use a lock washer too. > > Scott Gray > Associate Member PTG > > > Brian Doepke wrote: >> >> What is the standard size square bolt needed to replace the wing >> nuts used inside the benches to secure the legs? >> >> Brian P. Doepke, RPT >> President-PTG Indiana Chapter >> A.A.A. Piano Works, LLC >> Piano Tuning + Service >> www.aaapianoworks.com >> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20091026/0be2877c/attachment.htm>
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