Stainless steel spring washer, also known as split lock washer, conforms to GB93 and DIN127 standard. Available in SUS304(A2) and SUS316(A4). It adopts split helical structure. When tightened, it maintains continuous elastic preload force to increase friction and prevent bolts and nuts loosening caused by vibration. With good corrosion resistance and passivated finish, stable elasticity. Sizes from M2 to M48, matched with various bolts. Widely used in aluminum profile frames, solar brackets, machinery, marine, outdoor projects and rail transit for locking connection.