S-94744A240 0.281" ID x 0.5" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• Precise dimensional accuracy (0.281" ID, 0.5" OD) ensures perfect fit for 1/4" fasteners, preventing assembly issues
• Enhanced load distribution with controlled thickness (0.056-0.071") to protect surfaces and reduce stress concentration
• Reliable mechanical strength backed by Rockwell B40 hardness, maintaining integrity under vibration and heavy loads
• Industry-standard compliance with ASME B18.21.1 specifications, guaranteeing interchangeability and performance consistency
• Environmental responsibility through RoHS 3 and REACH compliance, meeting global regulatory requirements for safe usage
• Versatile inch system compatibility for seamless integration with existing North American industrial equipment and fastening systems

Professional Applications & Engineering Value

These zinc-plated steel flat washers deliver exceptional engineering value by addressing critical industrial fastening challenges. The corrosion-resistant zinc coating prevents rust formation in humid or chemically aggressive environments, significantly reducing maintenance costs and equipment downtime. With precise 0.281" ID and 0.5" OD dimensions manufactured to ASME B18.21.1 standards, these washers provide reliable bearing surface support for 1/4" fasteners in machinery assembly, structural steel connections, and automotive applications. The controlled thickness range (0.056-0.071") and Rockwell B40 hardness ensure consistent performance under vibration and thermal cycling, making them ideal for industrial washers requirements where dimensional stability and load distribution are paramount for long-term reliability.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 dimensional specifications with precise inch system tolerances. The zinc-plated steel construction provides both corrosion protection and mechanical strength. Full compliance with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel, and REACH (EC 1907/2006) regulations (updated January 17, 2023, 233 SVHC) ensures environmental safety and regulatory acceptance for industrial applications worldwide.