S-98026A041 1.5" ID x 3.25" OD ASME B18.21.1 Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with zinc yellow-chromate plating for extended service life in harsh industrial environments
• Exceptional load distribution from 0.136-0.160" thickness prevents surface damage and maintains joint integrity
• High-strength Grade 8 performance with Rockwell C38 hardness for demanding heavy-duty applications
• Precise dimensional compatibility with 1.5" ID and 3.25" OD designed specifically for 1 3/8" screw sizes
• Industry-standard compliance meeting ASME B18.21.1 specifications for reliable, predictable performance
• Environmental regulation adherence with REACH compliance for safe, sustainable industrial use
• Optimized surface contact with USS flat design ensuring even pressure distribution across mating surfaces

Professional Applications & Engineering Value

These USS flat washers deliver critical engineering solutions for heavy-duty industrial applications where vibration resistance and load management are paramount. The zinc yellow-chromate plated steel construction provides superior corrosion protection in demanding environments, from construction equipment to manufacturing machinery. With Rockwell C38 hardness and Grade 8 strength classification, these washers maintain structural integrity under extreme pressure, preventing fastener loosening and surface deformation. The precise 1.5" ID and 3.25" OD dimensions ensure perfect compatibility with 1 3/8" fasteners, while the ASME B18.21.1 compliance guarantees consistent performance across industrial assemblies requiring reliable load distribution and vibration dampening capabilities.

Specification Summary & Compliance

Manufactured to exact ASME B18.21.1 specifications with dimensional precision including 1.5" inner diameter, 3.25" outer diameter, and 0.136-0.160" thickness range. Constructed from zinc yellow-chromate plated steel with Rockwell C38 hardness and Grade 8 strength classification. Fully compliant with REACH regulations (EC 1907/2006) as of June 14, 2023, containing no Substances of Very High Concern above threshold limits. Designed specifically for use with 1 3/8" screw sizes in inch measurement system applications.