My favorite type of lock washer... costs very little and can be replaced for very little (less than $1.00 per wheelset).



When we send wheels to the U.S. they sometimes get ordered with Imperial threading so that off the shelf replacements are easy to find.

We like the idea of using these non proprietary parts for axles so that people who use our products can pick up replacements anywhere.

A few of my Arvon wheelsets have tommy bolts with a 15mm flat for a wrench... these are a really early set (mid eighties) and I have since replaced the old washers seen here.