S-91133A218 28 mm ID Square Washers

Key Features & Benefits at a Glance

• Enhanced load distribution with 50mm width and square shape for superior surface contact and stability
• Exceptional corrosion resistance through galvanized steel construction for extended service life in harsh environments
• Optimized dimensional compatibility with 28mm inner diameter designed specifically for M22 screw applications
• Superior mechanical strength with Rockwell B40 hardness rating for reliable performance under heavy loads
• Substantial thickness advantage at 6.0mm for improved vibration resistance and joint integrity
• Full regulatory compliance meeting RoHS 3 and REACH standards for global industrial applications
• Metric system precision ensuring perfect fit and interchangeability in international projects

Professional Applications & Engineering Value

This heavy-duty M22 square washer delivers critical engineering solutions for industrial fastening systems requiring maximum load distribution and corrosion protection. The galvanized steel construction provides essential defense against environmental degradation, while the substantial 6.0mm thickness and 50mm width create an optimal bearing surface that prevents joint loosening under vibration and dynamic loads. The square configuration offers superior anti-rotation properties compared to round washers, making it ideal for structural applications, machinery assembly, and construction projects where reliable fastening solutions must withstand extreme conditions. The precise 28mm inner diameter ensures perfect alignment with M22 fasteners, eliminating installation issues and reducing maintenance requirements in demanding industrial environments.

Specification Summary & Compliance

This metric square washer features precise dimensional specifications including 28mm inner diameter, 50mm width, and 6.0mm thickness, engineered to exacting standards for M22 screw applications. The galvanized steel material provides consistent performance with Rockwell B40 hardness rating. Manufacturing complies with international regulatory requirements including RoHS 3 (2015/863/EU) compliance with exemption 6(a) for lead as an alloying element in steel, and full REACH (EC 1907/2006) compliance as of January 17, 2023, ensuring environmental responsibility and global market acceptance for industrial applications.