S-94744A397 0.656" ID x 1.25" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance through zinc plating, extending service life in demanding industrial environments
• Precise dimensional compatibility with 0.656" ID and 1.25" OD ensuring perfect fit for 5/8" screws
• Enhanced load distribution across surfaces, preventing material damage and maintaining joint integrity
• Industry-standard compliance with ASME B18.21.1 specifications for reliable mechanical performance
• Environmental responsibility with RoHS 3 and REACH compliance, meeting global regulatory requirements
• Robust steel construction providing excellent strength and durability for heavy-duty applications
• Consistent thickness control (0.090-0.112") ensuring uniform pressure distribution in assemblies

Professional Applications & Engineering Value

These zinc-plated steel flat washers deliver exceptional engineering value by addressing critical industrial challenges. The zinc plating provides a protective barrier against corrosion, significantly extending component life in humid or chemically aggressive environments. Engineered to ASME B18.21.1 standards, these flat washers ensure precise dimensional accuracy with their 0.656" ID and 1.25" OD configuration, specifically designed for 5/8" screws. This precision prevents fastener loosening, reduces stress concentration, and maintains joint integrity in heavy-duty applications including machinery assembly, structural steel connections, and industrial equipment maintenance. The inch system compatibility makes them ideal for North American manufacturing and maintenance operations requiring reliable, standardized components.

Specification Summary & Compliance

This flat washer features precise dimensional specifications including 0.656" inner diameter, 1.25" outer diameter, and thickness ranging from 0.090" to 0.112". Manufactured to meet ASME B18.21.1 standards for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) with exemption 6(a) for lead as an alloying element in steel, and REACH (EC 1907/2006) regulations current as of January 17, 2023, including 233 SVHC substances, ensuring environmental responsibility and workplace safety.