S-94744A507 0.531" ID x 1.25" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Exceptional strength and durability with Grade 8 classification and Rockwell C38 hardness, ensuring reliable performance under high-stress conditions.
• Superior corrosion resistance provided by the zinc-plated steel construction, extending service life in harsh industrial environments.
• Optimal load distribution due to the flat washer design with 1.25" OD and 0.090-0.112" thickness, preventing surface damage and fastener loosening.
• Precise fit and compatibility with 1/2" screws, featuring a 0.531" ID for secure and accurate fastener alignment.
• Compliance with industry standards including ASME B18.21.1, ensuring consistent quality, dimensional accuracy, and interchangeability.
• Environmental and safety adherence through RoHS 3 and REACH compliance, making them suitable for regulated and eco-conscious applications.
• Versatile inch system sizing that integrates seamlessly with existing machinery and fastener systems, reducing installation time and errors.

Professional Applications & Engineering Value

These Grade 8 zinc-plated steel flat washers are engineered to address critical challenges in industrial applications, such as excessive vibration, corrosion, and load concentration. The zinc plating offers a protective barrier against moisture and chemicals, significantly reducing the risk of rust and extending the lifespan of assemblies in demanding environments like construction, automotive, and heavy machinery. With a Rockwell C38 hardness and Grade 8 strength, they maintain integrity under high tensile and shear stresses, preventing deformation and failure. The flat design and precise dimensions (1/2" ID x 1.25" OD) ensure even pressure distribution, protecting surfaces and minimizing maintenance needs. Ideal for use with 1/2" screws, these washers support reliable fastening in structural and mechanical systems, enhancing safety and efficiency while meeting ASME B18.21.1 specifications for consistent performance.

Specification Summary & Compliance

This washer features an inner diameter (ID) of 0.531", outer diameter (OD) of 1.25", and thickness ranging from 0.090" to 0.112", designed for use with 1/2" screw sizes in inch measurement systems. It adheres to ASME B18.21.1 standards, ensuring precise dimensional tolerances and manufacturing consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting environmentally responsible procurement.