S-93785A822 0.141" ID x 0.35" OD ASME B18.21.1 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional Thermal Stability - Maintains structural integrity across a wide operating range from -20°F to 500°F, preventing deformation in extreme temperature applications
• Superior Chemical Resistance - PEEK material composition provides excellent resistance to harsh chemicals, solvents, and industrial fluids
• High Mechanical Strength - Rockwell M103 hardness ensures reliable performance under mechanical stress and vibration
• Precision Fit & Alignment - 0.141" ID and 0.35" OD dimensions provide optimal distribution of load for No. 5 screws
• Industry Standard Compliance - Manufactured to ASME B18.21.1 specifications for consistent quality and dimensional accuracy
• Environmental Regulation Compliance - Meets RoHS 3 and REACH requirements for safe use in regulated industries
• Consistent Thickness Control - 0.036-0.045" thickness range ensures uniform load distribution and reliable sealing performance

Professional Applications & Engineering Value

This PEEK plastic flat washer delivers exceptional engineering value in demanding industrial environments where conventional washers fail. The high-temperature resistance makes it ideal for automotive, aerospace, and chemical processing applications where components face thermal cycling from -20°F to 500°F. The chemical-resistant properties of PEEK material prevent degradation when exposed to aggressive solvents, oils, and industrial chemicals, ensuring long-term reliability in corrosive environments. With precise 0.35" OD dimensions and No. 5 screw compatibility, these washers provide optimal load distribution while maintaining electrical insulation properties. The black PEEK construction offers UV resistance for outdoor applications, making them suitable for electrical enclosures, pump systems, and machinery requiring durable, non-conductive spacing solutions.

Specification Summary & Compliance

This flat washer features precise dimensional specifications with 0.141" inner diameter and 0.35" outer diameter, designed specifically for No. 5 screw applications. The thickness is controlled between 0.036-0.045" to ensure consistent performance. Manufactured in compliance with ASME B18.21.1 standards for dimensional accuracy and quality assurance. The product is fully compliant with RoHS 3 (2015/863/EU) regulations and meets REACH (EC 1907/2006) requirements regarding substance restrictions, making it suitable for global industrial applications with strict environmental compliance needs.