S-90313A110 0.344" ID x 1.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for humid, chemical, or outdoor environments.
• Precise dimensional fit with 0.344" ID and 1.5" OD, ensuring reliable load distribution and screw alignment for 5/16" fasteners.
• Enhanced durability and surface protection due to the material's inherent strength and resistance to rust and oxidation.
• Compliance with strict environmental regulations, being RoHS 3 and REACH compliant for safe, sustainable use in global supply chains.
• Versatile industrial application across machinery, construction, and assembly lines where chemical resistance and longevity are critical.
• Consistent thickness tolerance (0.055-0.069") for uniform performance and reduced risk of assembly failures.

Professional Applications & Engineering Value

This 18-8 stainless steel flat washer is engineered to address common industrial challenges such as fastener loosening, surface damage, and material degradation in corrosive settings. Its inch-based dimensions (0.344" ID x 1.5" OD) and flat washer design provide a stable bearing surface that distributes load evenly, preventing embedment and extending the life of 5/16" screw assemblies. The stainless steel material offers excellent chemical and moisture resistance, making it suitable for demanding applications in food processing, marine equipment, and outdoor structures. By integrating RoHS and REACH compliance, it ensures environmental safety without compromising on mechanical performance, reducing maintenance costs and enhancing reliability in industrial washers and hardware systems.

Specification Summary & Compliance

This washer meets standard inch system dimensions with an inner diameter of 0.344", outer diameter of 1.5", and thickness range of 0.055-0.069", designed specifically for 5/16" screw size applications. It conforms to general flat washer manufacturing practices and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial components.