S-91133A221 38 mm ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with galvanized steel construction for extended service life in harsh environments
• Exceptional load distribution thanks to the 50mm square design that prevents fastener embedment
• Optimized for M30 fasteners with precise 38mm inner diameter ensuring perfect fit and alignment
• Enhanced structural integrity from 6.0mm thickness and Rockwell B40 hardness for heavy-duty applications
• Global compliance assurance meeting both RoHS 3 and REACH regulations for international projects
• Reliable metric sizing ensuring compatibility with standard metric bolt systems worldwide
• Reduced maintenance requirements through durable galvanized coating that resists rust and degradation

Professional Applications & Engineering Value

This M30 square washer delivers critical engineering solutions where standard washers fall short. The galvanized steel construction provides essential corrosion resistance for outdoor infrastructure, marine applications, and industrial equipment exposed to moisture and chemicals. The square configuration offers superior surface contact compared to round washers, preventing rotation under vibration and distributing loads more effectively across softer materials. With its heavy-duty 6.0mm thickness and Rockwell B40 hardness, this metric square washer maintains structural integrity under extreme pressure in construction, machinery assembly, and transportation applications where fastener failure is not an option.

Specification Summary & Compliance

Manufactured to precise metric dimensions (38mm ID × 50mm width × 6.0mm thickness) with Rockwell B40 hardness for consistent performance. Compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and fully REACH (EC 1907/2006) compliant as of January 17, 2023, meeting the latest environmental and safety standards for industrial components.