Skyway Tuff Wheel 3/8" Flanged Axle Nut Silver
Skyway Tuff Wheel 3/8" axle nuts in coarse (24tpi) or regular (26tpi) pitch. Old Skyways use 24tpi, modern Sykyways can use either. Can also be used on all other 3/8" 26tpi hubs.
How do I know which thread I have? That's easy; TPI stands for threads per inch, so just lay a ruler along you axle and count the threads in 1 inch.