S-91225A113 5.3 mm ID x 11 mm OD Plastic Washers

Key Features & Benefits at a Glance

• Exceptional thermal stability withstanding temperatures up to 250°F for reliable performance in heated industrial environments
• Superior electrical insulation properties thanks to phenolic plastic construction, preventing current leakage in electrical assemblies
• Outstanding dimensional precision with 5.3mm ID perfectly matched to M5 screws for secure, vibration-resistant fastening
• Enhanced durability with Rockwell M95 hardness rating resisting deformation under heavy mechanical loads
• Full regulatory compliance meeting RoHS 3 and REACH standards for safe use in global industrial applications
• Corrosion-resistant performance in chemical environments where metal washers would degrade
• Consistent thickness control between 0.9-1.1mm ensuring uniform pressure distribution across fastened surfaces

Professional Applications & Engineering Value

This phenolic plastic flat washer delivers critical engineering solutions where electrical insulation and thermal resistance are paramount. The M5 metric sizing ensures precise compatibility with standard industrial fasteners, while the brown phenolic material provides exceptional dielectric strength for electrical panels, control systems, and motor assemblies. Unlike metal alternatives, these flat washers eliminate galvanic corrosion risks in mixed-material applications and maintain structural integrity in high-temperature environments up to 250°F. The combination of Rockwell M95 hardness and consistent 11mm OD creates reliable bearing surfaces that distribute clamp loads effectively, preventing surface damage to sensitive components in automotive, aerospace, and industrial machinery applications.

Specification Summary & Compliance

This metric flat washer features precise dimensional specifications with 5.3mm inner diameter, 11mm outer diameter, and 0.9-1.1mm thickness range. Manufactured to exacting standards for M5 screw compatibility, the washer demonstrates exceptional mechanical properties with Rockwell M95 hardness rating. The product fully complies with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) requirements, including the latest SVHC updates as of June 14, 2023, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.