Check the listing for details. 100 Pcs M6 Star Internal Tooth Lock Washers Stainless Steel Locking Washers. Condition: New. Listed at 15.20 USD. Star internal tooth lock washers are essential fastening components designed to prevent loosening, widely used in machinery, furniture, electrical appliances, devices, cars, sports equipment, and industrial production of shock absorption.SpecificationColor: SilverMaterial: 304 Stainless SteelAdaptable Bolt Size: M3Inner Diameter: 6 mm / 0.24 inchOuter Diameter: 16 mm / 0.63 inchPacking List: 100 x Internal Tooth Lock WashersAdvantageMaterial: Made of 304 Stainless Steel, which provides anti-rust properties, wear resistance, oxidation resistance, high strength, and long service time.Feature: Star internal tooth lock washers feature radial teeth that create more friction and rotational resistance between the fasteners and substrate for superior locking capability.