S-93785A809 0.469" ID x 1.25" OD ASME B18.21.1 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional thermal stability maintains performance from -20°F to 500°F, ideal for extreme temperature environments
• Superior strength and rigidity from 30% carbon filler content, providing enhanced load distribution and reduced creep
• Excellent chemical resistance of PEEK plastic ensures reliability in harsh industrial and chemical processing applications
• High hardness rating (Rockwell M103) delivers outstanding wear resistance and long service life
• Precise dimensional compatibility with 7/16" screw sizes ensures proper fit and optimal fastening performance
• Comprehensive regulatory compliance with RoHS 3, REACH, and ASME B18.21.1 standards for global market acceptance
• Reduced maintenance requirements through durable construction that withstands demanding operating conditions

Professional Applications & Engineering Value

This carbon-filled PEEK plastic flat washer delivers exceptional engineering value in demanding industrial environments where conventional metal washers fail. The 30% carbon filler material significantly enhances structural integrity and dimensional stability, preventing deformation under high mechanical loads and thermal cycling. Engineered to ASME B18.21.1 specifications, these washers provide reliable performance in high-temperature applications up to 500°F while maintaining functionality in cryogenic conditions down to -20°F. The combination of chemical resistance and Rockwell M103 hardness makes them ideal for chemical processing, aerospace, automotive, and semiconductor manufacturing applications where corrosion resistance, electrical insulation, and consistent performance under extreme conditions are critical requirements.

Specification Summary & Compliance

This flat washer features precise dimensional specifications with 1.25" OD, 0.469" ID, and thickness ranging from 0.064" to 0.104" for compatibility with 7/16" screw sizes. Manufactured to ASME B18.21.1 standards for flat washers, the product maintains consistent dimensional accuracy and performance characteristics. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for international industrial applications. The inch system measurement and black color provide easy identification and standardization across maintenance and assembly operations.