S-98970A130 0.375" ID x 0.875" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with hot-dipped galvanized steel coating for extended service life in harsh environments
• Precise dimensional fit with 0.375" ID and 0.875" OD ensuring proper alignment and load distribution for 5/16" fasteners
• Enhanced load bearing capacity through flat washer design that prevents surface damage and maintains joint integrity
• Industry-standard compliance with ASME B18.21.1 specifications guaranteeing consistent quality and performance
• Environmental responsibility with RoHS 3 compliance meeting strict regulatory requirements for hazardous substances
• Versatile industrial application across multiple sectors including construction, machinery, and outdoor installations
• Durable material construction providing reliable performance under varying temperature and moisture conditions

Professional Applications & Engineering Value

These USS flat washers manufactured from hot-dipped galvanized steel deliver exceptional engineering value by addressing critical industrial challenges. The robust galvanized coating provides a sacrificial layer that significantly extends service life in corrosive environments, making them ideal for outdoor construction, marine applications, and industrial equipment exposed to moisture and chemicals. The precise 0.375" ID and 0.875" OD dimensions ensure perfect compatibility with 5/16" screws, preventing loosening and maintaining joint integrity under vibration and dynamic loads. Engineered to ASME B18.21.1 standards, these flat washers offer reliable load distribution that prevents surface damage to connected materials while maintaining consistent clamping force in demanding assembly applications across multiple industrial sectors.

Specification Summary & Compliance

This USS flat washer features precise dimensional specifications including 0.375" inner diameter, 0.875" outer diameter, and thickness ranging from 0.064" to 0.104" designed specifically for 5/16" screw applications. Manufactured in compliance with ASME B18.21.1 standards for dimensional accuracy and performance requirements. The product meets RoHS 3 (2015/863/EU) compliance standards, ensuring environmental responsibility and regulatory adherence for industrial use across global markets.