S-98970A133 0.562" ID x 1.375" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with hot-dipped galvanized steel construction for extended service life in harsh environments
• Precise load distribution with 1.375" outer diameter to prevent surface damage and maintain joint integrity
• Perfect fit for 1/2" fasteners with 0.562" inner diameter ensuring secure installation and vibration resistance
• Industry-standard compliance with ASME B18.21.1 specifications for guaranteed dimensional accuracy and interchangeability
• Enhanced environmental safety through RoHS 3 compliance, meeting strict regulatory requirements
• Versatile thickness range (0.086-0.132") accommodates various compression needs and assembly tolerances
• Heavy-duty performance in inch measurement system for reliable use in industrial machinery and structural applications

Professional Applications & Engineering Value

These USS flat washers deliver exceptional engineering value through their hot-dipped galvanized steel composition, providing superior corrosion resistance that directly addresses common failure points in outdoor, marine, and chemical processing environments. The robust 1.375" OD and precise 0.562" ID work in tandem to distribute clamping forces evenly across mating surfaces, preventing stress concentration and material deformation in heavy-duty applications. Manufactured to ASME B18.21.1 standards, these 1/2" washers ensure perfect compatibility with standard fasteners while the zinc coating creates a sacrificial barrier that significantly extends maintenance intervals in structural steel, pipeline, and industrial equipment assemblies where moisture and corrosive elements are constant challenges.

Specification Summary & Compliance

This USS flat washer features dimensional specifications including 0.562" inner diameter, 1.375" outer diameter, and thickness ranging from 0.086" to 0.132" designed specifically for 1/2" screw sizes. The product maintains full compliance with ASME B18.21.1 dimensional standards and manufacturing specifications. Environmental compliance is verified through RoHS 3 (2015/863/EU) certification, ensuring restricted substance compliance for global industrial applications. Manufactured from hot-dipped galvanized steel in the inch measurement system, these washers deliver consistent performance across construction, manufacturing, and maintenance operations requiring reliable corrosion protection.