UNI 1734
Chamfering type of flat washer
UNI 1750
Chamfering type of thin flat washer
UNI 6952
Flat washer
UNI 6592-1972
Plain washers for Hexagon head bolt (TE)
UNI 6592-1972
Plain washers for cap head screws (TC)
UNI 5714
Plain washers,chamfered,hardened and tempered for high-strength structural bolting
UNI 6593
Large plain washers