S-90295A235 0.156" ID x 1.5" OD ASME B18.22.1 Plastic Washers

Key Features & Benefits at a Glance

• Excellent chemical resistance for reliable performance in harsh industrial environments where corrosion is a concern.
• Superior electrical insulation properties to prevent current leakage and enhance safety in electrical assemblies.
• Wide operating temperature range from -40°F to 300°F, ensuring dimensional stability and function in both extreme cold and heat.
• High Rockwell R115 hardness provides excellent load distribution and resistance to embedding, prolonging the life of the assembly.
• Precise dimensional fit with a 0.156" ID for No. 6 screws and a large 1.5" OD for superior bearing surface and vibration dampening.
• Compliance with major regulations including RoHS 3 and REACH, ensuring safety and environmental responsibility for global supply chains.
• Lightweight and non-magnetic nylon construction reduces overall weight and is ideal for sensitive electronic applications.

Professional Applications & Engineering Value

This Nylon Plastic Flat Washer is engineered to solve critical challenges in demanding industrial applications. Its inherent chemical resistance makes it ideal for use in environments exposed to solvents, oils, and moisture, preventing degradation that plagues metal washers. The non-conductive nature of the material provides essential electrical insulation, protecting components in electrical assemblies and electronic enclosures from short circuits. The large outer diameter (1.5" OD) offers an expanded load-bearing surface, which effectively distributes pressure and mitigates loosening from vibration, a common failure point in machinery and automotive systems. Designed for a No. 6 screw size, this washer ensures a secure and reliable fit, enhancing the integrity and longevity of your fastening solutions.

Specification Summary & Compliance

This flat washer features an Inside Diameter (ID) of 0.156" and an Outside Diameter (OD) of 1.5" with a thickness ranging from 0.025" to 0.035". It is manufactured to conform to the ASME B18.22.1 standard, ensuring precise dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and suitable for use in regulated markets.