Stainless Steel Lock and Flat Washers Key benefits Reliable clamping and anti‑loosen function: Internal serrated (toothed) lock washers apply spring tension between the fastener head and the substrate, increasing friction and resistance to rotation so nuts and bolts stay secure under vibration or movement. Strong, durable material: Made from stainless steel for strength and long service life in general fastening applications. Simple, fast installation: Serrated internal toothed washers press or rotate easily onto shafts for quick assembly and maintenance. Versatile support with flat washers: Flat washers distribute load and can accommodate bolts whose diameter is smaller than the washer hole, helping to stabilize and protect the mating surface. Features and performance Function: Lock washers bite into the mating surfaces to reduce loosening; flat washers spread load and prevent surface damage. Compatibility: Designed to work with standard bolts, screws and nuts; serrated internal tooth style fits directly on shafts for a secure fit. Ease of use: Install by pressing or turning the lock washer onto the shaft or placing the flat washer beneath the fastener head for immediate effect. Durability: Stainless steel construction provides the strength needed for , maintenance and repeated use. Typical applications Automotive and motorcycle repairs where vibration can loosen fasteners. Machinery, motors and equipment assemblies that require reliable anti‑rotation locking. Furniture, appliances and household repairs where a flat washer is needed to stabilize a bolt that fits a larger hole. What this product solves Prevents fastener loosening under vibration or movement. Protects substrates and spreads load to reduce material wear. Enables quick repairs and maintenance with easy, tool‑friendly installation. Suitable for general and maintenance tasks where dependable fastening and simple installation are required.