crankshaft nut

[saluki42]

Hi looking for help again with my Model Z restoration. Reassembling the crankcase all was going well till I found that the crankshaft pinion nut is missing. Having checked the thread is 5/8" x 20tpi which appears to be a non standard size has anybody any experience of trying to source a replacement for that nut.

Chris

[eddie]

Chris,
           Try LDMCC postwar spares - the nut for a Mark rear wheel spindle is 5/8" x 20 tpi.

  Regards,
                 Eddie.

[EW-Ron]

20 Threads per inch is Coarse Cycle Thread.

As against 26 tpi, which is Cycle Thread in (mostly) smaller sizes.

[saluki42]

Thanks for the help, I'd forgotten all about the larger BSCY threads, so used to using the smaller 26 tpi sizes. Found a supplier around £1.20 each

Thanks again
Chris