S-93785A816 0.22" ID x 0.51" OD ASME B18.21.1 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional thermal stability with a wide operating range from -20°F to 500°F, ensuring reliable performance in extreme temperature environments
• Superior mechanical strength with Rockwell M103 hardness, providing excellent resistance to deformation under high loads
• Chemical and corrosion resistance inherent to PEEK plastic material, ideal for harsh industrial and chemical processing applications
• Precision dimensional fit with 0.22" ID and 0.51" OD, designed specifically for No. 10 screws to prevent loosening and distribute load effectively
• Regulatory compliance assurance with RoHS 3 and REACH compliance, meeting international environmental and safety standards
• Standardized manufacturing quality per ASME B18.21.1 specifications, ensuring consistent performance and interchangeability
• Versatile thickness options ranging from 0.020" to 0.060", allowing for custom load distribution and gap filling requirements

Professional Applications & Engineering Value

Engineered for demanding environments, these PEEK plastic flat washers deliver exceptional value in applications where temperature extremes and chemical exposure compromise conventional metal washers. The high-temperature resistance up to 500°F makes them ideal for aerospace, automotive, and industrial equipment where thermal cycling occurs. Their black PEEK construction provides inherent lubrication properties and excellent dimensional stability, preventing galling and maintaining clamp force in vibrating assemblies. For No. 10 screw applications requiring ASME B18.21.1 compliance, these washers offer reliable load distribution while eliminating galvanic corrosion concerns in mixed-material assemblies. The combination of Rockwell M103 hardness and chemical inertness ensures long service life in aggressive environments where metal components would typically degrade.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 standards with dimensional specifications including 0.22" ID, 0.51" OD, and thickness range of 0.020-0.060". The PEEK material provides consistent performance across the specified temperature range of -20°F to 500°F while maintaining Rockwell M103 hardness. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and restricted substance adherence. All measurements conform to inch system requirements for North American industrial applications.