S-92148A214 12.7 mm ID x 21.1 mm OD DIN 127B Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance ensures fasteners remain securely locked under dynamic loads, reducing maintenance needs and equipment downtime.
• Excellent corrosion resistance from 18-8 stainless steel construction provides long-lasting performance in harsh or humid industrial environments.
• Precise dimensional fit with 12.7mm ID and 21.1mm OD guarantees proper alignment and consistent pressure distribution for M12 screws.
• Reliable spring action from the standard split design maintains constant tension, compensating for material relaxation and thermal expansion.
• Full regulatory compliance with DIN 127B standards ensures interchangeability and meets rigorous European engineering specifications.
• Environmentally safe composition through RoHS 3 and REACH compliance eliminates hazardous substances for workplace safety and global market access.
• Optimized thickness range (2.3-2.7mm) provides ideal deflection characteristics without compromising installation clearance requirements.

Professional Applications & Engineering Value

These M12 split lock washers deliver critical anti-loosening protection in high-vibration applications where fastener failure isn't an option. The 18-8 stainless steel construction resists corrosion from chemicals, moisture, and atmospheric exposure, making them ideal for food processing equipment, marine hardware, and outdoor machinery. The DIN 127B standard ensures precise dimensional control and spring characteristics that maintain clamping force through thermal cycles and dynamic loading. Unlike flat washers, the split design creates continuous upward force that counters rotational loosening in industrial assembly lines, transportation equipment, and heavy machinery. The combination of metric sizing and standardized specifications makes these locking washers perfect for European equipment manufacturing and global maintenance operations requiring reliable, corrosion-resistant fastening solutions.

Specification Summary & Compliance

Manufactured to DIN 127B specifications with precise dimensional tolerances: 12.7mm internal diameter, 21.1mm outer diameter, and 2.3-2.7mm thickness range. These split lock washers comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming they're free from restricted hazardous substances. The 18-8 stainless steel composition provides consistent mechanical properties and corrosion resistance without additional hardness rating requirements. Designed specifically for M12 screw sizes in metric fastening systems, ensuring proper fit and optimal locking performance in industrial applications.