S-96982A157 12.7 mm ID x 21.1 mm OD DIN 127B Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance thanks to the split lock design that maintains constant tension under dynamic loads
• Enhanced corrosion protection through zinc yellow-chromate plating that withstands harsh industrial environments
• Exceptional durability with Rockwell C44 hardness ensuring long service life under high-stress conditions
• Precise dimensional compatibility with 12.7mm ID and 21.1mm OD designed specifically for M12 screw applications
• Guaranteed mechanical performance through strict adherence to DIN 127B manufacturing standards
• Reliable industrial safety with RoHS 3 compliance ensuring environmental and workplace safety standards
• Optimized spring action from 2.3-2.7mm thickness range providing consistent locking force across temperature variations

Professional Applications & Engineering Value

This M12 split lock washer delivers critical engineering solutions for applications where vibration-induced loosening compromises assembly integrity. Manufactured from zinc yellow-chromate plated steel, it provides dual protection against corrosion and galvanic reaction while maintaining Rockwell C44 hardness for sustained spring performance. The DIN 127B standard ensures precise dimensional control with 12.7mm internal diameter and 21.1mm outer diameter, creating reliable interference fit with M12 fasteners in automotive, machinery, and structural applications. The split lock design generates continuous radial pressure that counters rotational forces in vibrating equipment, conveyor systems, and motor assemblies, preventing costly downtime and maintenance interventions.

Specification Summary & Compliance

This metric split lock washer features precise dimensions of 12.7mm ID × 21.1mm OD with thickness ranging 2.3-2.7mm, engineered to DIN 127B specifications for dimensional accuracy and mechanical performance. The zinc yellow-chromate plated steel construction provides superior corrosion resistance while maintaining Rockwell C44 hardness for optimal spring characteristics. Compliant with RoHS 3 (2015/863/EU) environmental standards, this washer meets international requirements for hazardous substance restrictions in industrial applications.