S-90295A252 0.344" ID x 1.125" OD ASME B18.22.1 Plastic Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance and electrical insulation properties due to Nylon Plastic construction, ideal for harsh environments
• Precise fit for 5/16" screws with a 0.344" ID, ensuring secure fastening and preventing loosening
• Excellent load distribution with a large 1.125" OD, protecting surfaces and increasing joint integrity
• Wide operating temperature range from -40°F to 300°F, maintaining performance in extreme thermal conditions
• Durable and wear-resistant with a Rockwell R115 hardness, offering long service life under mechanical stress
• Guaranteed dimensional consistency and interchangeability, manufactured to ASME B18.22.1 specifications
• Safe for regulated industries, fully compliant with RoHS 3 and REACH environmental standards

Professional Applications & Engineering Value

This Nylon Plastic Flat Washer is engineered to solve critical challenges in industrial assembly and electrical applications. Its non-conductive, non-corrosive properties make it perfect for preventing galvanic corrosion and electrical short circuits, a common issue in metal-fastened assemblies. The material's inherent lubricity and Rockwell R115 hardness reduce wear on components, extending the life of the fastening point. Designed for a 5/16" screw with precise inch system dimensions, it ensures a perfect fit, eliminating misalignment and reducing installation time. The ability to perform reliably in a temperature range from -40°F to 300°F makes it a robust choice for automotive, outdoor equipment, and machinery exposed to varying thermal cycles, providing consistent performance where other materials might fail.

Specification Summary & Compliance

This washer features an Inner Diameter (ID) of 0.344", Outer Diameter (OD) of 1.125", and a Thickness of 0.056-0.071", ensuring precise dimensional accuracy for use with 5/16" screws. It is manufactured in compliance with the ASME B18.22.1 standard, guaranteeing consistent quality and interchangeability. The product is verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for hazardous substances.