S-90295A464 0.344" ID x 0.875" OD Plastic Washers

Key Features & Benefits at a Glance

• Excellent corrosion resistance due to nylon plastic construction, ideal for harsh environments where metal washers would degrade.
• Precise fit for 5/16" screws with a 0.344" ID, ensuring secure fastening and preventing loosening in assemblies.
• Superior electrical insulation properties of nylon protects against short circuits and galvanic corrosion.
• Wide operating temperature range from -40°F to 180°F, maintaining performance and dimensional stability in varied conditions.
• High durability with Rockwell R115 hardness provides reliable load distribution and long service life under pressure.
• Compliance with RoHS 3 and REACH regulations ensures safety and environmental responsibility for global industrial applications.
• Lightweight and non-marring design protects sensitive surfaces from damage during installation and use.

Professional Applications & Engineering Value

This nylon plastic flat washer is engineered to address common industrial challenges such as vibration-induced loosening, electrical conductivity risks, and corrosion in demanding environments. Its nylon material offers inherent lubricity and resistance to chemicals and moisture, making it perfect for electrical enclosures, automotive assemblies, and outdoor equipment. The precise 0.344" ID and 0.875" OD in the inch system ensure a snug fit on 5/16" screws, distributing load evenly to prevent surface damage and extend the life of fastened components. By combining temperature resistance from -40°F to 180°F with regulatory compliance, this washer reduces maintenance costs and enhances reliability in commercial and industrial applications.

Specification Summary & Compliance

This flat washer adheres to standard dimensional tolerances for inch-based systems, with an inner diameter of 0.344", outer diameter of 0.875", and thickness ranging from 0.054" to 0.074". It is manufactured to meet general industrial specifications for fit and function with 5/16" screw sizes. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in regulated markets.