S-97310A213 31 mm ID x 68 mm OD DIN 7349 Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Enhanced load distribution from the large 68mm outer diameter, minimizing surface pressure and preventing damage to assembled components.
• Precise fit for M30 screws ensured by the 31mm inner diameter, providing secure fastening and reducing the risk of loosening.
• Exceptional durability and strength from the substantial 9.0-10.0mm thickness, built to withstand high-stress and heavy-duty applications.
• Guaranteed dimensional consistency and interchangeability by conforming to the rigorous DIN 7349 standard.
• Safe for sensitive applications with full compliance to RoHS 3 and REACH environmental regulations.
• Long-term reliability with material properties that resist rust and maintain performance, reducing maintenance needs and replacement costs.

Professional Applications & Engineering Value

This heavy-duty M30 flat washer is engineered to solve critical challenges in industrial assembly. Its robust 18-8 stainless steel makeup provides excellent resistance to corrosion and oxidation, making it a prime choice for applications in chemical processing, marine equipment, and construction machinery where exposure to moisture and corrosive agents is a constant concern. The DIN 7349 specification ensures precise dimensional tolerances, which is vital for maintaining alignment and distributing clamp load effectively in M30 screw assemblies, thereby preventing joint failure and material fatigue. The large outer diameter and substantial thickness work in concert to protect soft surfaces and bolted joints from indentation and stress concentration, significantly enhancing the service life of the entire fastened connection in demanding environments.

Specification Summary & Compliance

This flat washer conforms to the DIN 7349 standard, ensuring precise dimensional control for the 31mm inner diameter, 68mm outer diameter, and 9.0-10.0mm thickness. It is manufactured from 18-8 Stainless Steel and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to strict environmental and safety standards for industrial use.