S-94744A501 0.281" ID x 0.5" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with 0.5" OD and 0.281" ID to prevent surface damage and maintain joint integrity under high stress
• Superior corrosion resistance from zinc plating, extending service life in harsh industrial environments
• Maximum mechanical strength with Rockwell C38 hardness and Grade 8 classification for heavy-duty applications
• Precision dimensional consistency ensuring reliable fit with 1/4" fasteners and uniform 0.056-0.071" thickness
• Rigorous quality assurance through ASME B18.21.1 compliance for guaranteed performance standards
• Environmental regulation compliance meeting RoHS 3 and REACH requirements for global supply chain compatibility
• Enhanced fastener system durability through optimal hardness matching with Grade 8 bolts and screws

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these Grade 8 zinc-plated steel flat washers provide critical protection against bolt loosening and surface deformation in high-vibration environments. The Rockwell C38 hardness rating ensures exceptional resistance to embedding and permanent deformation, while the zinc-plated steel construction offers reliable corrosion protection in manufacturing plants, construction sites, and heavy machinery. The precise 1/4" internal diameter and 0.5" outer diameter create optimal load distribution, preventing joint failure in structural assemblies, automotive systems, and industrial equipment where ASME B18.21.1 compliance guarantees consistent performance under extreme mechanical stress.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 standards with dimensional precision including 0.281" ID, 0.5" OD, and thickness range of 0.056-0.071". Features Grade 8 strength classification with Rockwell C38 hardness for maximum durability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. Designed specifically for 1/4" screw size applications in inch measurement systems.