S-96582A406 0.938" ID x 2.25" 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 thanks to 2.25" OD design, preventing surface damage and maintaining joint integrity
• Precise 7/8" screw compatibility with 0.938" ID ensuring secure fit and reduced installation errors
• Enhanced durability through controlled thickness variation (0.136-0.192") for consistent performance under vibration
• Industry-standard compliance with ASME B18.21.1 specifications for reliable mechanical fastening applications
• Environmental responsibility meeting RoHS 3 and REACH standards for safe, sustainable manufacturing
• Heavy-duty construction using USS designation materials ideal for high-stress assembly requirements

Professional Applications & Engineering Value

This USS flat washer delivers critical engineering solutions where corrosion resistance and load-bearing capacity are paramount. The black corrosion-resistant coated steel construction actively combats environmental degradation in outdoor equipment, marine hardware, and structural assemblies. Its generous 2.25" outer diameter effectively distributes clamping forces across wider surfaces, preventing bolt head embedment in soft materials and reducing stress concentration in heavy-duty industrial applications. The precise 0.938" inner diameter maintains concentric alignment with 7/8" fasteners, eliminating play that could compromise joint stability. Engineered to ASME B18.21.1 standards, this washer provides predictable performance in vibration-prone machinery, construction frameworks, and transportation equipment where fastener integrity directly impacts operational safety.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 dimensional requirements with inch system measurements: 2.25" OD × 0.938" ID × 0.136-0.192" thickness range. The black corrosion-resistant coating on steel substrate provides consistent surface protection. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures hazardous substance restrictions are met. Designed specifically for 7/8" screw sizes in USS flat washer configurations.