General Description This high-quality manganese steel lock washer kit includes 280 pieces, perfect for various DIY and repair applications. Washers are designed to provide a secure hold and prevent screws and bolts from loosening. Technical Specifications Material: Manganese Steel Quantity: 280pcs Lock Washer Size: M3 x 9mm, M4 x 12mm, M5 x 12mm, M6 x 14mm, M8 x 18mm, M10 x 20mm, M12 x 25mm Plastic Box Dimensions: 9.5 x 17 x 2.2cm Color: Black Compatibility & Accessories These washers are compatible with a variety of screws and bolts, allowing you to use them in many DIY projects. Installation To install the washers, place them between the head of the screw or bolt and the surface of the material to be fastened. Ensure the washer is positioned correctly to ensure effective fastening. Use Use these washers in applications such as: Furniture assembly Mechanical repairs Construction projects Automotive applications