S-93785A804 0.25" ID x 0.562" OD ASME B18.21.1 Plastic Washers
Plastic Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Exceptional thermal stability maintains dimensional integrity across extreme temperature ranges from -20°F to 500°F
- Enhanced mechanical strength from 30% carbon filler provides superior load distribution and resistance to deformation under pressure
- Optimized chemical resistance of PEEK material ensures reliable performance in corrosive industrial environments
- Precision dimensional control with 0.25" ID and 0.562" OD guarantees perfect fit for No. 12 screw applications
- Superior hardness rating (Rockwell M103) delivers excellent wear resistance and long service life
- Full regulatory compliance with RoHS 3 and REACH standards meets international environmental and safety requirements
- ASME B18.21.1 certification ensures consistent quality and interchangeability in industrial assemblies
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these carbon-filled PEEK flat washers deliver critical performance advantages where conventional washers fail. The 30% carbon filler material significantly enhances structural integrity while maintaining the inherent chemical resistance of PEEK polymer, making them ideal for chemical processing, aerospace, and automotive applications. The 0.25" ID specification ensures precise compatibility with No. 12 screws, providing secure fastening in high-vibration environments. With operational capability from -20°F to 500°F, these black plastic washers eliminate thermal expansion concerns in temperature-cycling applications. The Rockwell M103 hardness combined with the flat washer design distributes clamping forces evenly, preventing surface damage and maintaining joint integrity in critical assemblies.
Specification Summary & Compliance
Manufactured to ASME B18.21.1 standards with inch system dimensions including 0.25" ID, 0.562" OD, and thickness range of 0.051-0.080". These carbon-filled PEEK washers feature Class 2A thread fit compatibility and maintain dimensional stability across specified temperature ranges. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and regulatory acceptance for global industrial applications.
