S-91169A245 21.2 mm ID x 33.6 mm OD DIN 127B Split Lock Washers
Split Lock Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance prevents fastener loosening under dynamic loads, ensuring long-term assembly integrity
- Hardened steel construction with Rockwell C44 hardness provides exceptional durability and spring tension retention
- Precision DIN 127B compliance guarantees dimensional accuracy and reliable performance in metric applications
- Optimized split-lock design creates continuous spring action that maintains clamping force in high-vibration environments
- Full regulatory compliance with RoHS 3 and REACH standards ensures safe use across global industrial markets
- Perfect M20 screw compatibility with 21.2mm ID and 33.6mm OD delivers secure fit and maximum contact surface
- Consistent 3.8-4.2mm thickness provides uniform loading distribution and reliable locking performance
Professional Applications & Engineering Value
This M20 steel split lock washer engineered to DIN 127B standards addresses critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and heavy equipment. The hardened steel material with Rockwell C44 hardness maintains its spring properties under continuous stress, while the precision metric dimensions (21.2mm ID × 33.6mm OD) ensure perfect compatibility with M20 fasteners. The split-lock design creates constant radial pressure that compensates for thermal expansion and vibration, making it ideal for high-vibration applications where maintaining bolt preload is essential for safety and operational reliability.
Specification Summary & Compliance
Manufactured to DIN 127B specifications with precise metric dimensions: 21.2mm internal diameter, 33.6mm external diameter, and 3.8-4.2mm thickness range. The split lock washer features Rockwell C44 hardness for optimal spring performance and meets comprehensive regulatory requirements including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance as of June 14, 2023, ensuring environmental safety and unrestricted use across international markets.
