Axle Thread Specification? 1974 Huffy Catalina



JATIII

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Feb 12, 2012
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Make: Huffy
Model: Catalina
Year: 1974
Serial No.: C214955

I'm rehabilitating this bike into my NYC metro bike.

I'd like to replace the existing axle nuts with tamper resistant nuts.

What is the nut size and thread specification?

It is close to an M8 x 1.0 ... but not quite.

Go Fast ... JIM