Starlock Washers M4 x12 Internal Tooth Clips Fastener 5 Points Kit 100pcs

Specification : Material : 65Mn Steel Finish:Black Oxidizing Inner Dia : M4 Outer Dia : 12mm/0.47inch Thickness : 1.5mm Hole Design: 5 Points Color: Black Package Content: 100 x Starlock Washers Description: 1.Product Material: 65Mn steel hard and durable. 2.Product Type: High precision starlock push on locking washers. 3.Application: Widely used in machinery equipment industrial production of shock absorption and insulation. 4.Easy to install: Sturdy and durable great corrosion resistance for machinery equipment and substrate easy to install. 5.Product Feature: A Lock washer exerts a spring force between the fasteners head and the substrate to create more friction and resistance to rotation.