To add to the mix, there are also conical external and internal tooth lock washers. I recall finding a couple of them at the front hood to lock panel brace.

Has your head exploded yet Tim? grin

[on edit] Looks like bartamos beat me to the punch on the conical washers for flat head applications.

Last edited by klhansen; 05/02/2020 2:43 AM.
Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.