BOUMVID Pack of 15 M4 Starlock Washers, Black Circlips Clamping Ring Clamping Discs, 65Mn Manganese Steel Inner Tooth Starlock Washers, Speed Tooth Lock Washers

• 【Package】15pcs M4x12 (inner diameter x outer diameter) Starlock washer.
• High-quality material: the locking ring is made of high-quality 65 manganese steel, a black coating can prevent oxidation, smooth edges, no burrs, corrosion resistance, high and low temperature resistance, durable without deformation, easy to install.
• Easy to install: The black seal makes the repair very easy. Simply place the inner tooth disc or star disc on the screw or bolt and tighten it again. The toothed or star-shaped design clamps the fastener and prevents it from loosening over time.
• Strong locking function: Our locking washers are used for quick attachment and repair, and the washers create a spring force between the screw head and the floor, resulting in more friction and rotation resistance. Star locking discs allow for permanent installation and secure locking.
• Wide application: the quick release card for internal teeth is widely used for vibration damping and insulation in machinery, furniture, electrical appliances, electronic equipment, automobiles, warehouses, lawn mowers, motors, boats, pumps, motors, sports equipment and industrial production.

65Mn manganese steel is a perfect material for spring rings due to its good strength. The black oxide coating provides better corrosion resistance in dry environments. Simply place the inner tooth disc or star shaped lock washer on the screw or bolt before tightening it. The teeth or star design grip the fastener and prevent loosening over time. Specification: Disc type: inner tooth star locking washers. Material: 65Mn spring steel. Surface: Black Oxide Size: M3 / M4 / M5 / M6 / M8 / M10 / M12. Quantity: 15pcs/50pcs