S-91434A120 0.531" ID x 1.063" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with 1.063" OD and 0.531" ID, preventing surface damage and joint loosening under high stress
• Superior corrosion resistance from the black protective coating, ensuring long-term reliability in harsh industrial environments
• High-strength Grade 8 performance with Rockwell C38 hardness, providing reliable service in heavy-duty applications
• Precise dimensional compliance with ASME B18.21.1 standards, guaranteeing consistent fit and function with 1/2" fasteners
• Enhanced durability through corrosion-resistant steel construction, reducing maintenance frequency and replacement costs
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting international environmental and safety requirements
• Optimized thickness range (0.100-0.116") providing ideal compression characteristics for secure fastening applications

Professional Applications & Engineering Value

This Grade 8 SAE flat washer delivers critical engineering solutions for industrial applications where corrosion resistance and structural integrity are paramount. The black corrosion-resistant coated steel construction specifically addresses common failure points in exposed or chemically aggressive environments, while the ASME B18.21.1 compliance ensures dimensional precision for reliable performance with 1/2" screw applications. The combination of Rockwell C38 hardness and optimized thickness provides exceptional load distribution, preventing surface damage and maintaining joint integrity in heavy machinery, structural steel connections, and automotive assemblies. These industrial washers effectively solve vibration-induced loosening and galvanic corrosion issues, extending equipment service life while reducing maintenance interventions.

Specification Summary & Compliance

This heavy-duty flat washer features precise dimensional specifications including 0.531" ID, 1.063" OD, and thickness range of 0.100-0.116" designed for 1/2" screw applications. Manufactured to ASME B18.21.1 standards with Grade 8 strength classification and Rockwell C38 hardness rating. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.