S-91169A200 8.5 mm ID x 14.8 mm OD DIN 127B Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents loosening under dynamic loads, ensuring long-term joint integrity in machinery and equipment.
• High-strength steel construction with a Rockwell C44 hardness rating provides excellent durability and resistance to deformation under high stress.
• Precise metric sizing (8.5mm ID, 14.8mm OD) ensures a perfect fit for M8 fasteners, facilitating quick and accurate assembly.
• Compliance with DIN 127B standard guarantees dimensional accuracy, interchangeability, and reliable performance in industrial applications.
• RoHS 3 and REACH compliance ensures the washer is free from hazardous substances, making it safe for use in regulated environments and export markets.
• Standard split lock design offers a cost-effective and proven solution for maintaining clamp load in bolted connections.
• Consistent thickness (1.9-2.1 mm) provides uniform spring action and reliable locking force across production batches.

Professional Applications & Engineering Value

This M8 split lock washer is engineered to solve critical challenges in industrial fastening, where vibration and dynamic loads can cause standard fasteners to loosen over time. Made from high-strength steel and heat-treated to a Rockwell C44 hardness, it maintains its spring force and resists flattening, even in high-stress environments like automotive assemblies, heavy machinery, and conveyor systems. The DIN 127B compliant standard split design ensures it bites into both the nut and workpiece surface, creating a reliable locking action that secures M8 threaded fasteners. Its metric dimensions (8.5mm ID, 14.8mm OD) provide exact compatibility, reducing installation errors and rework. By incorporating this washer, engineers can enhance the safety and longevity of bolted joints, minimizing maintenance downtime and operational risks.

Specification Summary & Compliance

This washer conforms to DIN 127B for dimensional accuracy, including an internal diameter of 8.5 mm, outer diameter of 14.8 mm, and thickness range of 1.9-2.1 mm, designed specifically for M8 screw sizes. It meets critical regulatory standards, being RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant (as of 06/14/2023, 235 SVHC), ensuring environmental safety and material reliability for global supply chains.