Replace those chewed-up, stripped, rusty axle nuts with some new new. These are the good ones with serrated rotating flange washers.

Available with M9 x 1.0 or M10 x 1.0 threading and sold in pairs.

Most front track hubs use 9mm axles and most rear hubs use 10mm axles, but there are some exceptions. It is up to you to measure and know which size you need.

Available in chrome or black.

Not compatible with Campagnolo track axles, which have 26 tpi threading.