S-91455A220 31 mm ID x 56 mm OD DIN 125; ISO 7089 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating that protects against rust and extends service life in harsh industrial environments
• Exceptional load distribution thanks to precise 31mm ID and 56mm OD dimensions, preventing surface damage and fastener loosening
• Consistent thickness tolerance (3.7-4.3mm) ensures uniform pressure distribution and reliable performance under heavy loads
• High mechanical strength with Rockwell B91 hardness, providing excellent durability and resistance to deformation
• Guaranteed dimensional accuracy through compliance with DIN 125 and ISO 7089 standards for perfect fit with M30 screws
• Environmental compliance with RoHS 3 and REACH regulations, ensuring safe use across global markets
• Versatile industrial application as a cost-effective solution for machinery, structural assemblies, and heavy equipment

Professional Applications & Engineering Value

This heavy-duty M30 flat washer delivers critical engineering value through its zinc plated steel construction and precision manufacturing. The combination of Rockwell B91 hardness and controlled thickness variation (3.7-4.3mm) solves common industrial challenges by preventing joint failure, reducing maintenance frequency, and extending equipment lifespan. Engineered to DIN 125 and ISO 7089 standards, these metric washers ensure perfect compatibility with M30 fasteners in structural steelwork, heavy machinery, and industrial equipment where vibration resistance and load distribution are paramount. The zinc plating provides essential corrosion protection, making these flat washers ideal for outdoor applications and harsh operating conditions.

Specification Summary & Compliance

This flat washer features precise dimensional specifications with 31mm inner diameter, 56mm outer diameter, and 3.7-4.3mm thickness range. Manufactured to DIN 125 and ISO 7089 standards, ensuring consistent quality and dimensional accuracy. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety requirements for industrial components.