S-96582A434 1.375" ID x 3" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with black-coated steel for extended service life in harsh industrial environments
• Optimal load distribution with 3" OD and 1.375" ID design to prevent surface damage and fastener loosening
• Precision fit for 1 1/4" screws ensuring secure fastening and reduced installation time
• Robust construction with 0.136-0.192" thickness range providing reliable performance under heavy loads
• Industry-standard compliance with ASME B18.21.1 specifications for guaranteed dimensional accuracy
• Environmental responsibility through RoHS 3 and REACH compliance for safe, sustainable operations
• Versatile inch system compatibility for seamless integration with existing industrial equipment and standards

Professional Applications & Engineering Value

This USS flat washer delivers critical engineering solutions for industrial applications where corrosion resistance and load distribution are paramount. The black corrosion-resistant coated steel construction protects against environmental degradation in demanding settings like construction, heavy machinery, and outdoor infrastructure. With its 3" outer diameter and 1.375" inner diameter, this washer effectively distributes clamping force over a wider area, preventing surface indentation and maintaining joint integrity in high-vibration environments. The precise dimensional control per ASME B18.21.1 standards ensures consistent performance across assembly lines, while the inch system compatibility makes it ideal for maintenance and repair operations in North American industrial facilities. These heavy-duty flat washers serve as essential components in structural connections, equipment mounting, and mechanical assemblies where reliability cannot be compromised.

Specification Summary & Compliance

This USS flat washer features dimensional specifications of 3" OD, 1.375" ID, and 0.136-0.192" thickness range, designed specifically for 1 1/4" screw sizes. Manufactured in compliance with ASME B18.21.1 standards for dimensional accuracy and performance requirements. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) compliance for chemical safety regulations as of June 14, 2023, covering 235 Substances of Very High Concern.