S-90295A218 0.281" ID x 0.375" OD ASME B18.22.1 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional chemical resistance protects against corrosion and degradation in harsh industrial environments
• Reliable electrical insulation properties prevent current leakage and short circuits in electrical assemblies
• Wide temperature tolerance from -40°F to 300°F ensures stable performance in extreme thermal conditions
• Consistent dimensional accuracy with 0.281" ID and 0.375" OD provides precise fit for 1/4" screw applications
• Durable Rockwell R115 hardness maintains structural integrity under compression and vibration
• Compliance with ASME B18.22.1 standard guarantees manufacturing quality and interchangeability
• RoHS 3 and REACH compliance ensures environmental safety and regulatory acceptance

Professional Applications & Engineering Value

This nylon plastic flat washer delivers critical engineering solutions where metal fasteners fail. The green nylon material provides inherent chemical resistance against oils, solvents, and industrial fluids, eliminating galvanic corrosion concerns in mixed-material assemblies. Its excellent electrical insulation properties make it ideal for electrical enclosures, control panels, and electronic equipment where current isolation is paramount. The temperature range from -40°F to 300°F ensures reliable performance in outdoor applications, automotive components, and HVAC systems experiencing thermal cycling. Manufactured to ASME B18.22.1 specifications, these flat washers maintain consistent load distribution while preventing surface damage to sensitive materials, making them essential for precision assembly operations across multiple industries.

Specification Summary & Compliance

This flat washer features precise inch dimensions with 0.281" inner diameter, 0.375" outer diameter, and thickness range of 0.051-0.080" for optimal performance with 1/4" fasteners. Manufactured in compliance with ASME B18.22.1 standard for dimensional consistency and mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) requirements for chemical safety, including the latest SVHC updates as of June 14, 2023.