M4 DIN 6798 Type A, Metric, Serrated Lock Washers, External Type "A", Steel, Zinc Plated

Serrated washers are made with small sharp serrations that, when compressed, prevent loosening.Effective as a lock washer when used with harder materials.Diameter (Nominal): M4Diameter (Dimension): 4mmInside Diameter (Nominal): 4.3mmOutside Diameter...