S-90108A036 0.812" ID x 2" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with zinc-plated steel construction for extended service life in demanding environments
• Optimal load distribution with 2" outer diameter providing excellent surface coverage and joint stability
• Precise screw compatibility with 0.812" inner diameter ensuring perfect fit for 3/4" screw applications
• Enhanced vibration resistance through controlled thickness range (0.122-0.177") maintaining consistent performance under stress
• Industry-standard reliability manufactured to ASME B18.21.1 specifications for guaranteed dimensional accuracy
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe industrial use
• Heavy-duty construction designed for USS (United States Standard) applications requiring robust fastening solutions

Professional Applications & Engineering Value

These zinc-plated steel USS flat washers deliver critical engineering value in industrial applications where corrosion resistance and load distribution are paramount. The zinc plating provides essential protection against environmental factors, significantly extending component lifespan in outdoor, marine, or high-moisture environments. Engineered specifically for 3/4" screw applications, the precise 0.812" ID ensures secure fastening without slippage, while the generous 2" OD effectively distributes clamping force across wider surface areas. This combination addresses common industrial challenges including joint loosening, surface damage, and premature fastener failure, making these flat washers ideal for structural steel connections, heavy machinery assembly, and construction applications requiring reliable, long-term fastening solutions.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 dimensional standards with precise 0.812" inner diameter and 2" outer diameter specifications. The thickness range of 0.122-0.177" ensures consistent performance across production batches. These USS flat washers maintain full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming they contain no restricted substances and meet current environmental safety standards for industrial applications.