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 1751-1941
Type A single coil spring lock washers
UNI 1751-1941
Type B single coil spring lock washers
UNI 5714
Plain washers,chamfered,hardened and tempered for high-strength structural bolting
UNI 6593
Large plain washers
UNI 8840
Curved spring washers—Type A
UNI 8840
Wave spring washers—Type B
UNI 8842
Toothed lock washers with external teeth—Type A
UNI 8842
Toothed lock washers with internal teeth—Type J
UNI 6598
Double grooved square taper washers for use with channel sections
UNI 5716
Double grooved square taper washers for high-strenghth structural bolting of steel channel sections