S-94744A224 0.188" ID x 0.5" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance through zinc plating, extending service life in demanding industrial environments
• Precise dimensional fit with 0.188" ID and 0.5" OD ensuring perfect alignment with No. 8 screws
• Consistent load distribution with controlled thickness (0.036-0.045") to prevent surface damage and loosening
• Reliable mechanical performance backed by Rockwell B40 hardness for durable, long-lasting fastening solutions
• Industry-standard compliance with ASME B18.21.1 specifications for guaranteed quality and interchangeability
• Environmental responsibility through RoHS 3 and REACH compliance, meeting strict industrial safety regulations
• Versatile inch system compatibility for seamless integration with existing machinery and equipment

Professional Applications & Engineering Value

These zinc-plated steel flat washers deliver exceptional engineering value by addressing common industrial fastening challenges. The zinc plating creates a protective barrier against corrosion, significantly extending component life in humid or chemically aggressive environments. With precision-engineered dimensions (0.188" ID x 0.5" OD) specifically designed for No. 8 screw applications, these washers ensure perfect fitment and prevent misalignment issues that can compromise assembly integrity. The controlled thickness variation maintains consistent pressure distribution, eliminating stress concentration points that lead to material fatigue. Manufactured to ASME B18.21.1 standards, these flat washers provide reliable performance in automotive assemblies, machinery manufacturing, electrical enclosures, and structural frameworks where vibration resistance and long-term reliability are critical.

Specification Summary & Compliance

This flat washer features inch system dimensions with 0.188" internal diameter, 0.5" outer diameter, and thickness ranging 0.036-0.045". Manufactured from zinc-plated steel with Rockwell B40 hardness, it complies with ASME B18.21.1 dimensional and mechanical specifications. The product is fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and meets REACH (EC 1907/2006) requirements as of January 17, 2023, including 233 Substance of Very High Concern (SVHC) compliance.