Custom Spring Lock Washer Manufacturer | Precision Forged Fasteners

A Spring Lock Washer is a split-ring fastener that uses spring elasticity to prevent bolts and nuts from loosening under vibration. Unlike a flat washer that mainly distributes load, a Spring Lock Washer applies continuous axial force, creating friction that resists rotation. This makes it essential in machinery, automotive systems, agricultural equipment, and industrial assemblies where vibration and thermal cycling can cause joint failure. Our production process begins with careful material selection, including carbon steel, alloy steel, and stainless steel. Forging and cold heading form the basic geometry, while CNC machining and stamping refine dimensions, split gap, and surface integrity. Heat treatment controls hardness and elasticity, and surface treatments such as zinc plating or black oxide improve corrosion resistance. Every batch is inspected for dimensions, spring force, and appearance to ensure consistent performance. For international customers, we understand that specifications vary by region and industry. We work with DIN, ISO, ANSI, and custom standards, and we support engineering teams with material recommendations and tolerance analysis. Our equipment list includes 8 forging machines with 630T and 300T capabilities, 10 multi-station cold heading forming machines, over 100 CNC lathes, 50 CNC machining centers, 20 turning-milling composite machines, and 10 centering machines. This allows us to produce non-standard Spring Lock Washers with complex profiles, precise split gaps, and reliable spring characteristics. Whether you need a standard replacement or a fully customized fastener for a new design, our team focuses on practical value: stable locking performance, repeatable quality, and on-time delivery. We invite you to share your drawings and application details so we can recommend the right Spring Lock Washer for your project.