S-93785A813 1.062" ID x 2.5" OD ASME B18.21.1 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional temperature resistance from -20°F to 500°F, ensuring reliable performance in extreme thermal environments without degradation
• Superior chemical resistance thanks to PEEK plastic construction, preventing corrosion and maintaining integrity in harsh industrial settings
• High dimensional stability with precise 1.062" ID and 2.5" OD, providing consistent fit and load distribution for 1" screw applications
• Enhanced durability with Rockwell M103 hardness, offering excellent wear resistance and long service life under heavy-duty conditions
• Industry-standard compliance with ASME B18.21.1 specifications, guaranteeing interchangeability and reliable mechanical performance
• Environmental and safety compliance through RoHS 3 and REACH certification, ensuring safe use in regulated industries
• Optimized thickness range (0.108-0.150") for proper clamping force and vibration resistance in critical assemblies

Professional Applications & Engineering Value

This PEEK plastic flat washer delivers critical engineering solutions for industries where conventional metal washers fail. Its high-temperature capability (500°F maximum) makes it ideal for automotive, aerospace, and chemical processing equipment exposed to thermal cycling. The chemical-resistant properties prevent degradation from oils, solvents, and aggressive fluids, while the dimensional stability maintains precise tolerances under load. Engineered for 1" screw applications with ASME B18.21.1 compliance, this washer eliminates galvanic corrosion concerns in mixed-material assemblies and provides reliable insulation in electrical applications. The black PEEK material offers UV resistance for outdoor installations, making it a versatile component for demanding industrial environments where reliability and regulatory compliance are paramount.

Specification Summary & Compliance

This flat washer features precise dimensional specifications with 1.062" inner diameter, 2.5" outer diameter, and thickness ranging from 0.108" to 0.150" for optimal performance with 1" screws. Manufactured to ASME B18.21.1 standards for dimensional accuracy and mechanical properties. The component is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant with current substance restrictions. Temperature rating spans from -20°F to 500°F with maintained Rockwell M103 hardness throughout the operational range, ensuring consistent performance in demanding applications.