Check the listing for details. 80 Pcs Spring Lock Washer M12 304 Stainless Steel Split Lock Washer. Condition: New. Listed at 16.94 USD. 304 stainless split lock washers are commonly used fasteners and are suitable for fastening assembly, mechanical equipment, bicycles automatic, and electronic equipment. They increase connection stability, reduce looseness and vibration, and decrease load pressure to prevent excessive local stress by providing elastic pressure and cushioning effects.SpecificationWasher Specifications: M12Material: 304 Stainless SteelWasher Size: 12.5 x 18 mm / 1/2" x 5/7"(ID*OD)Thickness: 2.5 mm / 0.1 inchPacking List: 80 Pcs x Spring WasherAdvantage1. The lock Washer is made of 304 stainless steel, which is complete specifications, with high hardness, strong toughness, wear resistance, rustproof, high corrosion resistance, and durability.2.