S-91122A135 0.938" ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments.
• Exceptional load distribution from the 2" square design, minimizing surface pressure and preventing material damage.
• Precision fit for 7/8" screws with a 0.938" inner diameter, providing secure fastening and reducing installation errors.
• Enhanced mechanical strength with Rockwell B83 hardness, offering excellent durability under high-stress conditions.
• Reliable thickness control between 0.235" and 0.265", ensuring consistent performance and compatibility in assemblies.
• Full environmental compliance with RoHS 3 and REACH standards, making it safe for regulated industries and global supply chains.
• Broad industrial applicability in inch-based systems, ideal for heavy machinery, construction, and marine applications.

Professional Applications & Engineering Value

This heavy-duty square washer is engineered from 18-8 Stainless Steel to address common industrial challenges like corrosion, vibration loosening, and uneven load distribution. Its 2" width and square shape provide a larger bearing surface, effectively spreading clamp load and preventing bolt head or nut embedment into soft materials. The precise 0.938" ID ensures a snug fit on 7/8" screws, reducing play and maintaining alignment in dynamic applications such as structural steelwork, heavy equipment assembly, and outdoor infrastructure. The Rockwell B83 hardness guarantees that the washer retains its form under high torque and repetitive stress, while the corrosion-resistant properties make it suitable for chemical processing, marine, and food industry environments where moisture and contaminants are prevalent.

Specification Summary & Compliance

This square washer meets standard inch system dimensions with an inner diameter of 0.938" and thickness ranging from 0.235" to 0.265". It is manufactured to common industrial tolerances for reliable performance in 7/8" screw applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and adheres to strict environmental and safety standards for global industrial use.