DIN125 Washer - Split Spring Lock, Vibration-Resistant
The DIN125 split spring lock washer is a small, ring-shaped spring washer with a cut and beveled ends that bite into the nut and the mounting surface. It adds tension and friction to a bolted joint so nuts and bolts stay tight under vibration. Made from spring steel or stainless steel with various coatings, it is vibration-resistant and simple to fit between a fastener head and the workpiece.
Usage scenarios (about 3 sentences):
Use it in automotive and motorcycle assemblies (engines, suspension, brake mounts) to stop fasteners backing off from constant vibration. Fit it in industrial machines, power tools, HVAC units, and construction equipment to keep bolts secure during heavy use. It also works well in appliances, bicycles, electronics, and marine fittings—choose stainless or coated types where moisture or corrosion is a concern.
Product advantages
The DIN125 split spring lock washer is precision-stamped from hardened spring steel and finished with corrosion-resistant plating to deliver consistent locking force and extended service life. Its split, spring-like geometry bites into mating surfaces to maintain preload and resist loosening from shock and vibration, making it ideal for automotive, industrial, and machinery applications while fitting standard bolt sizes. Backed by a legacy of quality manufacturing and strict inspection standards, it offers a compact profile, easy installation, and reliable vibration-resistant performance as a cost-effective safeguard for critical joints.
Company profile
Our company specializes in precision fastener solutions, producing DIN125 split spring lock washers engineered for superior vibration resistance and long-term reliability. With ISO-certified manufacturing, advanced metallurgical processes, and rigorous quality testing, we deliver consistent hardness, dimensional accuracy, and corrosion protection across standard and custom sizes. We support engineers and procurement teams with fast lead times, flexible MOQ, and responsive technical guidance to ensure optimal assembly performance. Committed to sustainable production and global logistics, we provide traceable materials, competitive pricing, and dependable after-sales service—helping partners reduce maintenance, prevent loosening under dynamic loads, and extend equipment lifespan for industrial and automotive applications.
Enterprise core strength
Our company is a specialized fastener manufacturer delivering precision DIN125 and split spring lock washers that resist vibration and secure assemblies. With ISO-aligned production lines, advanced machining, and rigorous multi-stage inspection, we ensure consistent material quality—carbon steel, stainless, and heat-treated alloys—optimized for fatigue resistance and corrosion protection. We serve automotive, industrial, and OEM markets with customizable dimensions, batch traceability, and competitive lead times. Dedicated technical support assists with selection and testing to reduce downtime and warranty claims. Committed to sustainable practices and responsive global logistics, we combine engineering expertise and reliable supply to add measurable value to customers' assemblies worldwide.
Lock Washers add pressure to the nut or bolt to prevent loosening. Most common lock washers are split with one end is higher than the other. This provides a spring like action, adding pressure to hold the joined components tightly in place.
xarella.huang@jm-fastener.comSince our establishment in 2006, JM has been adhering to the mission of creating maximum value for customers by providing differentiated services, and making a positive contribution to the society.