Spring Washer

The Zinc Plated Split Spring Lock Washer is a durable and economical anti-loosening fastening accessory designed to maintain lasting elastic clamping force for bolt and nut connections in machinery, automotive, electrical, construction and general industrial assembly applications. Featuring an open split circular spring structure formed by high-toughness spring steel, this lock washer generates continuous elastic rebound tension after compression, effectively offsetting vibration loosening force and preventing fasteners from rotating loose during long-term equipment operation.

Manufactured from premium 65Mn spring steel and high carbon spring steel, the split spring lock washer delivers excellent elastic recovery capacity, fatigue resistance and long-cycle durability without permanent deformation under repeated compression. The surface adopts blue-white electro zinc plating treatment, forming a uniform compact zinc barrier layer to resist oxidation, moisture and mild corrosion, which effectively extends service life and keeps stable elastic performance under indoor and light outdoor working environments.

The unique open split structure provides stable elastic tension after being flattened during tightening. The two cutting ends tightly prop against the nut and mounting surface respectively, creating continuous jacking friction to lock the fastener in place. It can effectively absorb vibration and thermal expansion stress, greatly lowering the risk of connection loosening and equipment failure. Standard inner diameter perfectly matches metric bolts, suitable for manual assembly and automated mass production lines.

Split spring lock washers are widely used for general mechanical equipment assembly, automotive chassis and engine component fixing, electrical cabinet installation, building steel structure connection, furniture hardware assembly, pipeline support fastening and all vibration-prone mechanical linkage systems. Its reliable anti-loosening performance and cost advantage make it the most universal elastic locking auxiliary fastener for all kinds of conventional fastening projects.

We provide complete OEM and ODM manufacturing services and support customized production based on customer drawings, physical samples and special specification demands. Customized inner hole sizes, wire diameters, outer diameters, spring thickness and exclusive export packaging schemes are available to satisfy unique project requirements. Private labeling, laser marking and custom branding printing services are also supported for hardware distributors, machinery manufacturers, auto parts factories and construction contractors.

Each zinc plated split spring lock washer is manufactured under strict fastener quality control standards. All finished washers go through comprehensive dimensional inspection, elastic fatigue rebound testing and surface coating uniformity test before shipment, to guarantee precise dimensional tolerance, stable elastic performance and qualified anti-corrosion zinc layer for every product batch.