A gift I have no use for.
I got for free a nicely machined 13T 3/32'' screw-on cog (it's nice to be in the area where fixed riding is not that popular). It has 8-BC34.6 and NL at the opposite side stamped near the base. However, it doesn't fit my Mack hubs, on which my Miche adapters spin freely on.
It has no place in this table:
Type Thread Equivalent
I.S.O. 1.375" x 24 tpi 34.92 x 1.048 mm
British 1.370" x 24 tpi 34.80 x 1.058 mm
French 34.7 x 1 mm 1.366" x 25.4 tpi
Italian 35 mm x 24 tpi 1.378" x 1.058 mm
I guess the number stamped is the thread diameter - indeed its a tad smaller than Campy - anybody knows the hub I need to buy to make it fit
This is Uniglide casette cog/lockring. I was mislead by the straight, non twisted teeth.