S-90295A370 0.13" ID x 0.285" OD Plastic Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance ensures long-term reliability in harsh environments, eliminating rust-related failures.
• Excellent electrical insulation properties prevent short circuits and enhance safety in electrical assemblies.
• Wide operating temperature range from -40°F to 180°F maintains performance in extreme thermal conditions.
• High Rockwell R115 hardness provides durable load distribution and resistance to deformation under pressure.
• Precise dimensional fit with 0.13" ID and 0.285" OD ensures secure placement on No. 5 screws, reducing installation errors.
• Lightweight nylon construction reduces overall assembly weight without compromising strength.
• Full regulatory compliance with RoHS 3 and REACH standards guarantees safe, environmentally responsible usage.

Professional Applications & Engineering Value

This nylon plastic flat washer is engineered to address common industrial challenges such as galvanic corrosion, electrical conductivity, and weight sensitivity. Made from durable nylon material, it effectively isolates dissimilar metals, preventing corrosive reactions in assemblies involving No. 5 screws. Its inherent electrical insulation properties make it ideal for electronics, control panels, and automotive wiring systems, where stray currents pose risks. The washer’s ability to perform across a broad temperature range from -40°F to 180°F ensures stability in outdoor equipment, HVAC systems, and machinery exposed to thermal cycling. By providing consistent vibration dampening and surface protection, it extends the service life of connected components while meeting stringent industry standards for safety and environmental care.

Specification Summary & Compliance

This flat washer conforms to inch system dimensions with an inner diameter of 0.13", outer diameter of 0.285", and thickness between 0.055" and 0.070", ensuring precise compatibility with No. 5 screw sizes. Manufactured from nylon plastic with a Rockwell R115 hardness rating, it offers reliable mechanical properties for general-purpose fastening. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances and adherence to environmental and health safety protocols.