S-90770A030 0.344" ID x 0.75" OD General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from Alloy 20 Stainless Steel, ideal for harsh chemical and acidic environments, extending component lifespan.
• Precise dimensional fit with 0.344" ID and 0.75" OD, ensuring secure seating and optimal load distribution for 5/16" screws.
• Consistent thickness range (0.050-0.070") provides reliable performance and uniform pressure across the fastened assembly.
• Compliance with RoHS 3 and REACH standards, guaranteeing safety and environmental responsibility for industrial use.
• Durable construction for heavy-duty applications, offering long-term reliability without degradation in demanding conditions.
• Inch-system compatibility simplifies sourcing and integration with standard imperial fasteners, reducing installation errors.

Professional Applications & Engineering Value

This Alloy 20 Stainless Steel flat washer is engineered to address critical challenges in industries like chemical processing, pharmaceuticals, and food handling, where exposure to corrosive substances can compromise fastener integrity. Its high nickel and chromium content provides exceptional resistance to sulfuric acid and other aggressive media, preventing premature failure and maintenance downtime. The precise 0.344" ID and 0.75" OD dimensions, tailored for 5/16" screw size, ensure accurate alignment and even load distribution, reducing stress concentrations and enhancing joint stability. By combining robust material properties with inch-system standardization, this washer delivers reliable performance in heavy-duty industrial applications, supporting long-term operational safety and efficiency.

Specification Summary & Compliance

This flat washer adheres to standard inch-system dimensions with an inner diameter of 0.344", outer diameter of 0.75", and thickness ranging from 0.050" to 0.070", designed specifically for 5/16" screw applications. It conforms to environmental and safety regulations, including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance as of June 14, 2023, with 235 SVHC, ensuring it meets stringent industrial and global standards for hazardous substance control.