S-91166A340 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, extending service life in harsh industrial environments
• Exceptional load distribution thanks to precise 31mm ID and 56mm OD dimensions, preventing surface damage and loosening
• High mechanical strength from Rockwell B75 hardness, ensuring reliable performance under heavy loads
• Guaranteed dimensional accuracy through compliance with DIN 125 and ISO 7089 standards for consistent fit with M30 screws
• Enhanced safety and reliability with controlled thickness (3.7-4.3mm), reducing the risk of fastener failure
• Environmental compliance meeting RoHS 3 and REACH regulations, making them suitable for global supply chains
• Cost-effective durability using zinc plated steel, offering long-term value in demanding applications

Professional Applications & Engineering Value

These M30 flat washers are engineered to address critical challenges in industrial assembly, such as vibration-induced loosening and corrosive wear. Made from zinc plated steel, they provide a robust barrier against moisture and chemicals, significantly extending the lifespan of fastening systems in machinery, structural frameworks, and automotive components. The precise metric dimensions and adherence to DIN 125 and ISO 7089 standards ensure a perfect fit with M30 screws, distributing loads evenly to prevent surface indentation and maintain joint integrity. This makes them ideal for heavy-duty applications where reliability and compliance with international specifications are paramount, reducing maintenance costs and downtime.

Specification Summary & Compliance

This flat washer features an ID of 31mm, OD of 56mm, and thickness of 3.7-4.3mm, manufactured to exact metric system tolerances as per DIN 125 and ISO 7089 standards. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for various industrial sectors.