340 metal spring washers M3-M12 various specifications internal tooth width star design <ul class="a-un0rdered-list a-vertical a-spacing-mini"> <li class="a-spacing-mini">【High-quality Materials】The metal lock washers are made of high-quality 65 manganese steel, with a black coating to prevent oxidation, smooth edges, no burrs, corrosion-resistant, resistant to high and low temperatures, durable and no deformation, easy to install. <br />【7 Sizes 340 Pcs】We have the 7 most commonly used sizes, M3×9 (60 Pcs), M4×10 (60 Pcs), M5×11 (60 Pcs), M6×12 (60 Pcs), M7×13 (60 Pcs), M8×14 (60 Pcs), M9×15 (60 Pcs), M10×16 (60 Pcs), M12×17 (60 Pcs), M14×18 (60 Pcs), M16×19 (60 Pcs), M18×20 (60 pcs), M10×21 (60 pcs), M12×22 (60 pcs), M14×23 (60 pcs), M16×24 (60 pcs), M18×25 (60 pcs), M10×26 (60 pcs), M12×27 (60 pcs), M14×28 (60 pcs), M16×29 (60 pcs), M18×30 (60 pcs), M10×31 (60 pcs), M12×32 (60 pcs), M14×33 (60 pcs), M16×34 (60 pcs), M18×35 (60 pcs), M10×36 (60 pcs), M12×12 (60 pcs), M5*12 (60 pcs), M6*14 (50 pcs), M8*18 (50 pcs), M10*20 (40 pcs), M12*25 (20 pcs), a variety of sizes are available to meet your different size needs. <br /> [Powerful Tool] Lock washers can be used for quick fastening and repairs. The locking disc applies spring force between the fastener head and the base material, making the bolt thread fit tightly against the nut or base material thread, creating greater friction and anti-rotation resistance. This is an ideal choice for quick repairs and repairs. <br /> [Wide Application] Widely used in mechanical equipment, mainly in appliances, lawn mowers, lawns, engines, cars, trucks, trailers, electronic equipment, toys, bicycles, RVs, boats, pumps, furniture, industrial production, bearings, machinery, etc. Shockproof and insulating, it promotes quick maintenance and makes maintenance very easy. </li> </ul>