S-96982A138 4.1 mm ID x 7.6 mm OD DIN 128A Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance due to the curved split design that maintains constant spring tension against loosening
• Enhanced corrosion protection with zinc yellow-chromate plating for extended service life in harsh industrial environments
• Reliable hardness performance with Rockwell C44 rating ensuring consistent spring action and load distribution
• Precision dimensional compatibility with 4.1mm ID and 7.6mm OD designed specifically for M4 screw applications
• Standardized quality assurance through DIN 128A compliance for consistent performance across metric fastener systems
• Optimized space utilization with compact 0.7mm thickness and 1.2mm overall height for tight assembly configurations
• Durable material construction using steel substrate for repeated use in high-stress fastening applications

Professional Applications & Engineering Value

These M4 split lock washers engineered to DIN 128A standards provide critical vibration resistance in dynamic industrial environments where fastener loosening can compromise equipment safety and operational continuity. The curved lock washer design creates continuous spring tension that counters rotational forces in machinery, automotive assemblies, and electrical enclosures. Manufactured from zinc yellow-chromate plated steel, these metric lock washers offer dual protection against both mechanical stress and environmental corrosion. The Rockwell C44 hardness ensures the split washer maintains its spring characteristics through repeated compression cycles, making them ideal for maintenance-heavy applications requiring frequent disassembly and reassembly. Their precise 4.1mm internal diameter and 7.6mm outer diameter provide perfect fitment for M4 fasteners in crowded assembly layouts.

Specification Summary & Compliance

This split lock washer features precision dimensions with 4.1mm ID, 7.6mm OD, 0.7mm thickness, and 1.2mm overall height specifically engineered for M4 screw applications. The product conforms to DIN 128A specifications for dimensional accuracy and performance requirements. Manufactured from steel with zinc yellow-chromate plating for corrosion resistance and hardened to Rockwell C44 for consistent spring performance. The curved split design provides reliable locking action in metric fastener systems across various industrial applications.