S-91122A151 0.219" ID Square Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Excellent load distribution due to the 2" square design, reducing surface pressure and preventing damage to assembled materials.
• Precise fit for No. 10 screws with a 0.219" inner diameter, ensuring secure fastening and minimizing loosening under vibration.
• Enhanced durability and wear resistance from Rockwell B68 hardness, providing long-term reliability in high-stress applications.
• Compliance with environmental regulations, meeting RoHS 3 and REACH standards for safe, sustainable use in global markets.
• Consistent dimensional accuracy in inch measurements, facilitating easy integration with existing machinery and components.
• Optimal thickness range (0.056-0.063") for balanced strength and flexibility, accommodating various torque requirements without deformation.

Professional Applications & Engineering Value

This 2" square washer made from 18-8 stainless steel addresses common industrial challenges such as corrosion-induced failure and uneven load distribution. Its square shape provides a larger bearing surface compared to round washers, effectively dispersing force and protecting sensitive materials from indentation or cracking. The 0.219" ID ensures a snug fit on No. 10 screws, critical for maintaining joint integrity in vibrating machinery, automotive assemblies, and structural frameworks. With Rockwell B68 hardness, it resists deformation under high clamping forces, while the stainless steel material offers reliable performance in moist, chemical, or temperature-variable environments, reducing maintenance costs and downtime in industrial applications.

Specification Summary & Compliance

This washer features precise inch-system dimensions, including an inner diameter of 0.219" and thickness between 0.056-0.063", ensuring compatibility with standard No. 10 screw sizes. Manufactured from 18-8 stainless steel with a hardness of Rockwell B68, it meets common industry requirements for strength and durability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for hazardous substance restrictions.