01-10-2009, 12:40 AM
There is a modern washer that is a variation on this theme, but I can't remember it's name. It has a recessed flat area, but a raised rim. The rim protects the bolt head, for whatever reason. Good ideas stick around, it seems.
M. Demetrius Abicio
(David Wills)
Saepe veritas est dura.
(David Wills)
Saepe veritas est dura.