Square Washer - Split Lock (Spring) Anti-Vibration Prevents Loosening
Usage scenarios:
1) Automotive and machinery: use it on engine mounts, suspension assemblies, or any vibrating equipment to prevent nuts and bolts from loosening under continuous motion.
2) Construction and structural joints: ideal for securing sheet metal, timber connections, and steel framing where vibration or thermal cycling can reduce clamp force.
3) Appliances and electronics: fits small fasteners in HVAC units, household appliances, and electronic housings to stop rattle and maintain electrical or mechanical connections.
Product features
The square washer is a split lock (spring) washer made from spring-tempered metal with a square profile and raised split end, combining a large bearing surface with resilient spring action. Its design applies consistent pressure under nuts and bolts to prevent loosening and absorb vibration, extending joint life and reducing maintenance. The square shape resists rotation in slotted or recessed assemblies while the stepped split geometry creates anti-vibration locking for reliable retention in demanding applications.
Team strength
Our dedicated engineering and production team blends precision manufacturing, materials expertise, and rigorous quality control to deliver the Square Washer Split Lock (spring) that prevents loosening and reduces vibration. Core strengths include custom alloy selection, CNC tolerances, and validated spring tempering for consistent anti-vibration performance. Value-focused services—rapid prototyping, scalable volume production, industry certifications, and responsive technical support—ensure reliable installation and reduced maintenance for industrial assemblies. With on-site testing, supply-chain traceability, and quick lead times, our team transforms product performance into measurable uptime and cost savings, giving purchasing teams confidence in durable, safety-focused fastening solutions and global after-sales support included worldwide.
Enterprise core strength
Our engineering and production team combines decades of fastener expertise with precision manufacturing to deliver square split-lock (spring) washers engineered for consistent anti-vibration performance and long-term reliability. Materials specialists optimize alloy selection and heat treatment; quality teams enforce ISO-standard inspection, torque and fatigue testing; R&D continuously refines geometry for improved locking and load distribution. Customer success and technical support provide application guidance, customization and prototyping. Lean logistics ensure on-time delivery and scalable volume fulfillment. Together, our cross-functional team guarantees component consistency, minimizes assembly downtime, and builds trusted partnerships that translate product performance into measurable value for OEMs and maintenance operations.
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.