S-90295A384 0.156" ID x 0.438" OD Plastic Washers

Key Features & Benefits at a Glance

• Excellent corrosion resistance ensures long-term reliability in harsh environments without rust or degradation
• Superior electrical insulation properties prevent current leakage and short circuits in electrical assemblies
• Wide temperature tolerance from -40°F to 180°F maintains performance in extreme thermal conditions
• Rockwell R115 hardness provides durable bearing surface protection against surface damage and loosening
• Precise dimensional fit with 0.156" ID specifically engineered for secure No. 6 screw applications
• Environmental compliance with RoHS 3 and REACH standards ensures safe use in regulated industries
• Lightweight nylon construction reduces overall assembly weight while maintaining structural integrity

Professional Applications & Engineering Value

This nylon plastic flat washer delivers critical engineering solutions where metal washers fail. The nylon material provides inherent corrosion resistance, eliminating galvanic corrosion issues in mixed-material assemblies and making it ideal for marine, chemical processing, and outdoor applications. Its electrical insulation properties are essential in electronic enclosures, control panels, and electrical equipment where current isolation is mandatory. The 0.156" ID ensures perfect compatibility with No. 6 screws, maintaining secure fastening while the 0.438" OD distributes load effectively across surfaces. Withstanding temperatures from -40°F to 180°F, this washer performs reliably in both freezing conditions and elevated temperature environments, making it invaluable for automotive, aerospace, and industrial equipment applications where thermal cycling is common.

Specification Summary & Compliance

This flat washer features precise inch system dimensions with 0.156" inner diameter, 0.438" outer diameter, and thickness ranging from 0.035" to 0.045". Manufactured from nylon plastic with Rockwell R115 hardness, it provides consistent performance across the specified temperature range. The product complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations regarding chemical substances, ensuring environmental responsibility and workplace safety. Designed specifically for No. 6 screw applications, this washer meets industrial standards for dimensional accuracy and material performance in commercial and industrial fastening systems.