Metric Steel Split Lock Washers w Black Ox DIN 127B - M2 M2.5 M3 M4 M5 M6 M8 M10 $4.44 Package Quantity 10 Size 3mm (M3) System of Measurement Metric Model DIN 127 B MPN DIN127B Finish Black Oxide Material Steel Brand MonsterBolts Type Lock Washer condition New New Metric Split Lock Washers. These are Steel with Black Oxide coating and conform to DIN 127B standards.Available in:M2, M2.5, M3, M4, M6, M8 and M10 sizes