S-91202A263 31.7 mm ID x 48.2 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 demanding applications.
• Zinc-plated steel construction provides excellent corrosion resistance, extending service life in harsh industrial environments.
• High Rockwell C44 hardness offers exceptional durability and resistance to deformation under high clamping pressures.
• Precise M30 screw size compatibility with 31.7mm ID and 48.2mm OD ensures a perfect fit and reliable fastening performance.
• DIN 127B standard compliance guarantees consistent quality, dimensional accuracy, and interchangeability for European metric assemblies.
• RoHS 3 and REACH compliance meets stringent environmental regulations, making it suitable for global supply chains and eco-conscious industries.
• Standard split lock design delivers cost-effective, proven locking action for general industrial maintenance and assembly operations.

Professional Applications & Engineering Value

This M30 split lock washer is engineered to solve critical fastening challenges in industrial applications where vibration-induced loosening can lead to equipment failure and safety hazards. The zinc-plated steel material provides a protective barrier against rust and corrosion, ideal for outdoor machinery, automotive assemblies, and construction equipment exposed to moisture. Its split lock washer type creates a spring-like action that maintains constant tension on the bolted joint, compensating for thermal expansion and material relaxation. With Rockwell C44 hardness, it withstands repeated stress cycles without losing its locking capability, making it a reliable choice for heavy-duty lock washers in manufacturing plants, conveyor systems, and agricultural machinery. Compliance with DIN 127B ensures precise metric threading compatibility, reducing installation errors and improving assembly efficiency.

Specification Summary & Compliance

This washer conforms to DIN 127B specifications with an inner diameter of 31.7mm, outer diameter of 48.2mm, and thickness between 5.8-6.2mm, designed for M30 screw size. It meets Rockwell C44 hardness standards for material strength and is manufactured from zinc-plated steel. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in regulated industries worldwide.