S-94744A244 0.281" ID x 0.734" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Precise dimensional fit with 0.281" ID specifically engineered for 1/4" screw applications to prevent loosening
• Enhanced load distribution through 0.734" OD design that minimizes surface pressure and material deformation
• Consistent performance with Rockwell B40 hardness ensuring reliable mechanical strength and wear resistance
• Regulatory compliance assurance meeting ASME B18.21.1 standards for dimensional accuracy and quality
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance for global industrial applications
• Optimized thickness range (0.056-0.071") providing ideal compression characteristics for various assembly requirements

Professional Applications & Engineering Value

These zinc-plated steel flat washers deliver exceptional engineering value in industrial fastening systems where corrosion resistance and dimensional precision are critical. The zinc plating creates a protective barrier against moisture and chemical exposure, significantly extending component life in outdoor equipment, machinery assemblies, and structural applications. Engineered specifically for 1/4" screw fastening systems, the precisely controlled 0.281" inner diameter ensures secure fitment while the 0.734" outer diameter provides optimal load distribution across joined surfaces. This combination addresses common industrial challenges including surface damage prevention, vibration resistance, and maintaining clamping force integrity under dynamic loads, making these flat washers ideal for automotive, construction, and manufacturing applications requiring reliable, long-term fastening solutions.

Specification Summary & Compliance

These precision flat washers feature dimensional specifications including 0.281" inner diameter, 0.734" outer diameter, and thickness range of 0.056-0.071" with Rockwell B40 hardness for consistent mechanical properties. Manufactured in compliance with ASME B18.21.1 standards for dimensional accuracy and performance requirements. The products are fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and meet REACH (EC 1907/2006) regulations regarding Substances of Very High Concern (SVHC) as of January 17, 2023.