Description If you are looking for a professional lock nut with washer, then your research is over here. That's because our product can meet your need. Adopted of premium material, practical and durable for long time use, not easy to get deformed and bring you much convenience. Features -Color:Silver -Material:Stainless steel -Size:0.50X0.50X0.30cm/0.20X0.20X0.12in - Made of high grade stainless steel, anti-rust, good thermal conductivity and heat resistance, rugged to ensure long-term use. - This lock nut has a built-in external tooth lock washer for free rotation. - The teeth on the lock washer bite into the surface and help lock the nut in place. - The nut has an external teeth washer attached and when tightened, thus providing a locking action. - Mainly used for hardware fastening accessories in machinery, furniture, electrical appliances, electronics/computers, automobiles, sports equipment and other industries. Package list: 50 x lock nuts