S-96582A439 2" ID x 4.25" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with black corrosion-resistant coating for extended service life in harsh industrial environments
• Heavy-duty load distribution with 4.25" outer diameter providing maximum surface coverage for 1 7/8" screw applications
• Precision dimensional accuracy with 2" inner diameter ensuring perfect fit and alignment in assembly operations
• Robust material construction using coated steel for exceptional durability and mechanical strength under high stress conditions
• Industry-standard compliance meeting ASME B18.21.1 specifications for reliable performance and interchangeability
• Environmental regulation adherence with full RoHS 3 and REACH compliance for safe, sustainable industrial use
• Optimal thickness range (0.153-0.213") providing consistent spacing and vibration resistance in critical fastening applications

Professional Applications & Engineering Value

These USS flat washers deliver exceptional engineering value through their black corrosion-resistant coated steel construction, specifically engineered to combat degradation in demanding industrial environments. The substantial 4.25" outer diameter provides superior load distribution, preventing surface damage and maintaining joint integrity under heavy static and dynamic loads. Perfect for 1 7/8" screw applications in construction, heavy machinery, and structural steel assemblies, these washers address common failure points by offering reliable corrosion protection while maintaining dimensional stability. The inch-system compatibility ensures seamless integration with existing industrial washers and fastening systems, making them ideal for maintenance, repair, and OEM applications where long-term reliability is paramount.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 standards with precise dimensional tolerances, these flat washers feature a 2" inner diameter and 4.25" outer diameter with thickness ranging 0.153-0.213". The black corrosion-resistant coated steel construction ensures consistent performance while maintaining full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Designed specifically for use with 1 7/8" screws in inch-system applications, these washers provide reliable mechanical properties for industrial fastening requirements.