3mm Countersunk Flat washer - Black - 50 Pcs.

This washer was designed to accommodate the #4 Flat heads as well as a 3MM metric Flat heads. You can now use the flat heads in place of Socket heads or Button heads in most applications. The dimensions are 5/16 Diameter and 5/64 High. The metric dimensions are 8MM Diameter and 2MM high.