S-91122A115 0.438" ID Square Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance provided by 18-8 stainless steel construction, ideal for harsh industrial environments
• Superior load distribution across a wide 2" square surface area, preventing surface damage and joint failure
• Enhanced durability with Rockwell B83 hardness, maintaining structural integrity under heavy loads
• Precision fit with 0.438" inner diameter specifically engineered for 3/8" screw applications
• Reliable thickness consistency between 0.235-0.265" ensuring uniform pressure distribution
• Environmental compliance with RoHS 3 and REACH standards, meeting global regulatory requirements
• Heavy-duty performance in inch system applications, providing long-lasting fastening solutions

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this 2" square washer delivers critical engineering value through its 18-8 stainless steel composition and precision dimensions. The substantial square profile provides maximum surface contact area, effectively distributing clamping force across wider surfaces to prevent material deformation and joint loosening in heavy machinery, structural steelwork, and industrial equipment. The corrosion-resistant properties of 18-8 stainless steel ensure reliable performance in moisture-prone environments, while the Rockwell B83 hardness maintains dimensional stability under sustained vibration and load conditions. Specifically designed for 3/8" screw applications with precise 0.438" inner diameter, this heavy-duty washer solves common fastening challenges in construction, manufacturing, and marine applications where standard washers prove insufficient.

Specification Summary & Compliance

This square washer features inch system dimensions with 2" width, 0.438" inner diameter, and thickness ranging 0.235-0.265" for consistent performance. Manufactured from 18-8 stainless steel with Rockwell B83 hardness, it provides reliable mechanical properties for industrial fastening applications. The product maintains dimensional accuracy suitable for standard 3/8" screw installations and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets.