S-91477A192 21 mm ID x 45 mm OD DIN 6796 Heavy-Vibration-Resistant Spring Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance - conical spring design maintains constant tension to prevent fastener loosening under dynamic loads
• Exceptional corrosion resistance - made from 18-8 stainless steel for reliable performance in harsh industrial environments
• Precision dimensional fit - 21mm inner diameter ensures perfect alignment with M20 fasteners for optimal load distribution
• Enhanced load-bearing capacity - 45mm outer diameter provides wider surface contact for improved stress distribution
• Industry-standard compliance - manufactured to DIN 6796 specifications for guaranteed interchangeability and performance
• Environmental responsibility - RoHS 3 and REACH compliant for safe use in regulated applications
• Durable construction - 5.0mm thickness and 6.4mm overall height deliver reliable spring action and long service life

Professional Applications & Engineering Value

This M20 spring lock washer delivers critical vibration resistance in demanding industrial applications where fastener security is paramount. The conical design creates continuous spring tension that compensates for material settlement and thermal expansion, preventing dangerous loosening in machinery, automotive assemblies, and structural frameworks. Manufactured from 18-8 stainless steel, this metric conical washer maintains its locking properties in corrosive environments where carbon steel components would fail. The precision DIN 6796 specification ensures consistent performance across all your M20 fastener applications, from heavy equipment manufacturing to precision instrumentation. The combination of reliable vibration resistance and environmental compliance makes this washer ideal for OEM production lines requiring both technical performance and regulatory adherence.

Specification Summary & Compliance

This spring lock washer features precise dimensional specifications with 21mm inner diameter, 45mm outer diameter, 5.0mm thickness, and 6.4mm overall height, engineered specifically for M20 screw applications. Manufactured in strict compliance with DIN 6796 standards for dimensional accuracy and performance requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial use across global markets.