S-96982A162 21.2 mm ID x 33.6 mm OD DIN 127B Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress environments, ensuring long-term joint integrity.
• Enhanced corrosion protection from the zinc yellow-chromate plating extends service life in harsh or outdoor industrial conditions.
• High hardness (Rockwell C44) provides excellent durability and resistance to deformation under heavy loads.
• Precise M20 sizing (21.2mm ID, 33.6mm OD) ensures a perfect fit and reliable performance with standard M20 fasteners.
• Compliance with DIN 127B standard guarantees consistent quality, dimensional accuracy, and interchangeability.
• RoHS 3 compliance meets stringent environmental regulations, making it suitable for global supply chains.
• Reliable spring action from the split design maintains constant tension, compensating for thermal expansion and settlement.

Professional Applications & Engineering Value

This M20 split lock washer is engineered to solve critical challenges in industrial fastening, where vibration and dynamic loads can compromise joint security. Manufactured from zinc yellow-chromate plated steel, it offers a robust barrier against corrosion, making it ideal for machinery, automotive assemblies, and structural applications exposed to moisture or chemicals. The split lock design and Rockwell C44 hardness work synergistically to maintain clamping force, preventing spontaneous loosening that leads to equipment failure. By adhering to the DIN 127B specification, it ensures precise dimensions and reliable performance in metric bolting systems, reducing maintenance downtime and enhancing operational safety in demanding environments.

Specification Summary & Compliance

This washer features an Internal Diameter (ID) of 21.2 mm, Outer Diameter (OD) of 33.6 mm, and Thickness of 3.8-4.2 mm, designed for M20 screw size. It conforms to the DIN 127B standard for dimensional and performance requirements, ensuring precise tolerances and interchangeability. The product is manufactured from steel with a zinc yellow-chromate plating for surface protection and is compliant with RoHS 3 (2015/863/EU), meeting environmental and safety regulations for restricted substances.