S-90295A238 0.188" ID x 1.5" OD ASME B18.22.1 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance thanks to durable Nylon Plastic construction, eliminating rust issues in harsh environments
• Precise fit for No. 8 screws with 0.188" ID ensuring secure fastening and preventing component movement
• Broad temperature tolerance from -40°F to 300°F maintains performance in extreme thermal conditions
• Superior electrical insulation properties of nylon material prevents electrical conductivity between components
• Reduced assembly weight compared to metal washers while maintaining Rockwell R115 hardness for reliable performance
• Environmental compliance assurance with RoHS 3 and REACH compliance meeting international regulatory standards
• Vibration dampening capability helps absorb shock and reduce noise in mechanical assemblies

Professional Applications & Engineering Value

This Nylon Plastic Flat Washer delivers critical engineering solutions where electrical insulation, chemical resistance, and weight reduction are paramount. The green color provides easy identification in complex assemblies, while the precise 1.5" outer diameter and 0.188" inner diameter ensure perfect compatibility with No. 8 screws across various industrial applications. Engineered to withstand temperature extremes from -40°F to 300°F, these washers prevent thermal degradation in HVAC systems, electrical enclosures, and outdoor equipment. The Rockwell R115 hardness maintains structural integrity under load, while the nylon material naturally resists chemicals, oils, and solvents commonly encountered in manufacturing environments, significantly extending service life and reducing maintenance frequency.

Specification Summary & Compliance

Manufactured to ASME B18.22.1 specifications with dimensional precision including 1.5" OD, 0.188" ID, and thickness range of 0.036-0.065". This flat washer meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations regarding chemical safety. The inch system measurement ensures compatibility with standard North American fastening systems, while the material properties and manufacturing standards guarantee consistent performance across industrial applications requiring reliable plastic washers.