Jones and Shipman 540 Washer
I am making some grinding wheel holders for a J & S 540.
There is a special washer which goes on the J & S 540 wheel flanges which stops the wheel rotating off. It has 2 catches on the internal diameter which engage on two slots.
Could someone please give me the OD and thickness of this washer
The OD is the same as the wheel flange. The thickness is whatever bit of sheet metal you've got lying about. I've got one that's about 20gauge, Another one that's 1/8" and one that's 1/8" rubber.
Shouldn't matter, since the threads are left hand and the wheel won't rotate off under load.