S-91122A215 0.688" ID Square Washers

Key Features & Benefits at a Glance

• Superior load distribution with 3" square design that prevents pull-through and surface damage in heavy-duty applications
• Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments
• Precision dimensional control with 0.688" inner diameter ensuring perfect fit for 5/8" screws
• Enhanced durability with Rockwell B84 hardness rating providing reliable performance under sustained pressure
• Optimal thickness range (0.235-0.265") delivers consistent compression and vibration resistance
• Full regulatory compliance with RoHS 3 and REACH standards for global industrial applications
• Versatile inch system compatibility designed for North American industrial equipment and machinery

Professional Applications & Engineering Value

This heavy-duty square washer addresses critical engineering challenges in industrial fastening systems where load distribution and corrosion resistance are paramount. The 18-8 stainless steel construction provides excellent chemical resistance against oils, moisture, and industrial chemicals, while the substantial 3" square footprint prevents embedding into soft materials and distributes clamping force over a wider area. The precise 0.688" inner diameter ensures proper alignment with 5/8" screws, reducing installation time and preventing cross-threading issues. Engineered for structural applications, machinery bases, and outdoor equipment, this industrial washer maintains integrity under extreme vibration and load conditions where standard washers would fail.

Specification Summary & Compliance

This precision square washer features inch system dimensions with 3" width, 0.688" inner diameter, and controlled thickness range of 0.235-0.265" for consistent performance. Manufactured from 18-8 stainless steel with Rockwell B84 hardness, it meets industrial standards for mechanical fastening applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, including the latest SVHC requirements as of January 2023, ensuring environmental safety and global market acceptance.