Home › Forum › Ask A Member › 17/64" bolt size? › Re: 17/64" bolt size?
November 21, 2017 at 2:53 am
#67731
Singer sewing machines used 17/64 x 28 in their products but yours with 20 TPI is really odd! You have to remember that manufacturers back then before standardization could make their fasteners any size or pitch they wanted so maybe that’s what the Johnson Bros did here. You could always drill it out and insert a 1/4 x 20 Helicoil. No one would know.