Key benefits Prevents fastener loosening caused by vibration and friction, improving assembly reliability. Protects nuts, bolts and screws from turning loose, reducing maintenance and downtime. Distributes clamping load evenly across the fastened joint to protect materials and maintain stability. Fast, tool-light installation speeds up assembly and service. Features Function: Split (locking) washers designed to bite into the nut/bolt head and mating surface to resist rotation and slipping under vibration. Material: Metal spring washers provide resilient tension and durable performance in clamped joints. Compatibility: Sized to be used with nuts, bolts and screws of the same nominal diameter. Place the washer between the fastener and the surface for correct function. Installation: Simple to fit manually or with standard tightening tools; no special hardware required. Performance: Helps maintain tension and joint integrity in applications subject to movement or vibration. Typical applications Industrial machinery: Keep motor mounts, gearboxes and machine frames secure where vibration is common. Automotive and powersports: Use on engine brackets, chassis fixtures and accessories to reduce fastener loosening under road or trail vibration. Construction and equipment: Secure panels, brackets and structural fittings where repeated loads and vibration occur. Practical notes Use the washer that matches the fastener diameter for reliable locking action. Position the split washer directly under the nut or bolt head between the fastener and the mating surface. Select metal spring washers when resilient tension and repeated load resistance are required. These split spring washers are a simple, low-cost way to improve joint stability and protect fasteners in vibration-prone assemblies.