S-91133A135 0.938" ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with galvanized steel construction, ensuring long-term durability in harsh industrial environments.
• Exceptional load distribution thanks to the 2" square design, minimizing surface pressure and preventing material damage.
• Precise fit for 7/8" screws with a 0.938" inner diameter, reducing installation time and improving assembly accuracy.
• Enhanced mechanical strength from Rockwell B40 hardness, providing reliable performance under high-stress conditions.
• Consistent thickness control between 0.235" and 0.265", ensuring uniform clamping force and vibration resistance.
• Full regulatory compliance with RoHS 3 and REACH standards, guaranteeing safe use in global industrial supply chains.
• Versatile inch-system compatibility for seamless integration with existing machinery and fastener systems.

Professional Applications & Engineering Value

This galvanized steel square washer delivers critical engineering solutions for heavy-duty applications. Its robust 2" width and precise 0.938" ID provide optimal load distribution, preventing bolt head embedment in soft materials and reducing stress concentration in structural assemblies. The Rockwell B40 hardness ensures reliable performance in construction equipment, machinery frames, and infrastructure projects where vibration loosening is a concern. The galvanized surface treatment offers essential corrosion protection for outdoor installations, industrial plants, and marine environments. Engineered specifically for 7/8" screw applications, this washer maintains joint integrity in high-vibration settings while meeting strict industry compliance requirements.

Specification Summary & Compliance

This square washer features standard inch dimensions with a 0.938" inner diameter, 2" width, and controlled thickness range of 0.235-0.265". Manufactured from galvanized steel with Rockwell B40 hardness, it complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and is REACH (EC 1907/2006) compliant with the latest SVHC updates as of 01/17/2023, ensuring full regulatory adherence for industrial applications.