S-90295A257 0.41" ID x 1.5" OD ASME B18.22.1 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance due to nylon plastic construction, eliminating rust and reducing maintenance in harsh environments.
• Reliable performance across extreme temperatures, functioning seamlessly from -40°F to 300°F without degradation.
• Superior load distribution and surface protection with a precise 1.5" OD and 0.41" ID, preventing damage to assembled components.
• Excellent electrical insulation properties ideal for applications requiring non-conductive components.
• High durability and wear resistance provided by Rockwell R115 hardness, ensuring long service life under mechanical stress.
• Guaranteed dimensional consistency and interchangeability through compliance with the ASME B18.22.1 standard.
• Safe for use in regulated industries with full compliance to RoHS 3 and REACH environmental standards.

Professional Applications & Engineering Value

This nylon plastic flat washer is engineered to solve critical challenges in demanding industrial environments. Its non-metallic, corrosion-resistant nature makes it perfect for electrical assemblies, marine applications, and chemical processing equipment where metal washers would fail. The 3/8" screw size compatibility and robust Rockwell R115 hardness ensure secure fastening and vibration resistance in machinery and automotive components. The ability to withstand a temperature range from -40°F to 300°F provides reliability in outdoor, aerospace, and HVAC systems, preventing thermal expansion issues. The distinctive green color aids in part identification and quality control, streamlining assembly processes for engineers and maintenance teams.

Specification Summary & Compliance

This flat washer features an Inside Diameter (ID) of 0.41", Outside Diameter (OD) of 1.5", and a Thickness ranging from 0.047" to 0.080". It is designed for use with 3/8" screw sizes and manufactured to meet the dimensional and mechanical requirements of the ASME B18.22.1 standard. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and safe for industrial use.