S-90295A236 0.197" ID x 0.292" OD ASME B18.22.1 Plastic Washers

Key Features & Benefits at a Glance

• Superior chemical resistance from nylon plastic construction, ideal for harsh industrial environments
• Excellent electrical insulation properties for enhanced safety in electrical assemblies
• Wide operating temperature range (-40°F to 300°F) ensures reliable performance in extreme conditions
• Rockwell R115 hardness provides optimal durability and load distribution for No. 8 screws
• Precision dimensional compliance with ASME B18.22.1 standards guarantees perfect fit and function
• Environmental regulation compliance with RoHS 3 and REACH for global market acceptance
• Vibration resistance and corrosion prevention protects fastened assemblies from loosening and degradation

Professional Applications & Engineering Value

This nylon plastic flat washer delivers exceptional engineering value in demanding applications where metal washers would fail. The green nylon construction provides inherent chemical resistance against oils, solvents, and corrosive substances, making it perfect for chemical processing equipment, marine environments, and food processing machinery. Its electrical insulation properties prevent galvanic corrosion and current leakage in electrical enclosures and control panels. The temperature resistance from -40°F to 300°F ensures dimensional stability in outdoor applications, automotive assemblies, and HVAC systems. Designed specifically for No. 8 screws, this washer maintains clamping force under vibration while protecting sensitive surfaces from damage, offering a reliable sealing solution that outperforms traditional metal washers in corrosive and electrical applications.

Specification Summary & Compliance

This flat washer features precise dimensional specifications with 0.292" OD, 0.197" ID, and 0.034-0.042" thickness specifically engineered for No. 8 screw applications. Manufactured in compliance with ASME B18.22.1 standards for dimensional accuracy and performance. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) compliance for chemical safety, ensuring environmental responsibility and global market acceptance. All measurements conform to the inch system of measurement for compatibility with standard industrial fastening systems.