S-91111A121 4.4 mm ID x 7 mm OD DIN 7980 Split Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance through the split lock design that maintains tension under dynamic loads
• Excellent corrosion protection with 18-8 stainless steel construction for harsh industrial environments
• Precision dimensional fit with 4.4mm ID specifically engineered for M4 screw applications
• Reliable spring action that compensates for loosening and maintains consistent clamping force
• Standardized quality assurance through DIN 7980 compliance for consistent performance
• Environmental regulation compliance meeting RoHS 3 and REACH requirements for global applications
• Optimized contact surface with 7mm OD distributing load effectively across fastened components

Professional Applications & Engineering Value

This M4 metric split lock washer delivers critical vibration-dampening performance in demanding industrial settings where fastener integrity is paramount. Engineered from 18-8 stainless steel, the washer provides exceptional corrosion resistance for applications exposed to moisture, chemicals, or outdoor elements. The standard split lock design creates continuous spring tension that counters loosening from machinery vibration, thermal cycling, and dynamic loads. Particularly valuable in assembly lines, automotive components, electrical enclosures, and precision equipment, this DIN 7980 compliant washer ensures long-term fastener security while the metric dimensions guarantee perfect compatibility with M4 fastening systems. The combination of material durability and mechanical function makes this component essential for maintenance reduction and operational reliability.

Specification Summary & Compliance

This split lock washer features precise metric dimensions with 4.4mm inner diameter, 7mm outer diameter, and 1.1-1.3mm thickness range, manufactured to DIN 7980 standards for dimensional accuracy and performance consistency. The component maintains compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance. Constructed from 18-8 stainless steel, this washer provides reliable corrosion resistance while the split lock mechanism delivers consistent spring action for secure fastening in industrial applications requiring vibration resistance.