S-90295A485 0.443" ID x 0.75" OD Plastic Washers

Key Features & Benefits at a Glance

• Exceptional temperature resilience for reliable performance in environments ranging from -40°F to 180°F, preventing material failure under thermal stress
• Superior electrical insulation properties due to nylon construction, reducing short-circuit risks in electrical assemblies
• Excellent corrosion and chemical resistance for long-lasting protection in harsh industrial settings without rust or degradation
• Precise dimensional accuracy with 0.443" ID and 0.75" OD ensuring perfect fit for 7/16" screws, minimizing assembly errors
• Rockwell R115 hardness provides optimal durability and load distribution, extending service life in high-vibration applications
• RoHS 3 compliance guarantees environmental safety and regulatory adherence for global supply chain integration
• Lightweight nylon material reduces overall component weight while maintaining structural integrity

Professional Applications & Engineering Value

This nylon plastic flat washer delivers critical engineering solutions where metal washers fall short. Its non-conductive properties make it ideal for electrical enclosures, control panels, and automotive wiring systems, eliminating galvanic corrosion risks. The broad temperature range (-40°F to 180°F) ensures dimensional stability in outdoor equipment, HVAC systems, and automotive underhood applications where thermal cycling occurs. The Rockwell R115 hardness provides sufficient compressive strength for vibration damping in machinery while preventing surface damage to connected components. As an inch-system flat washer specifically engineered for 7/16" fasteners, it maintains precise clamping force in assembly lines, reducing maintenance frequency and improving operational efficiency.

Specification Summary & Compliance

Manufactured to precise inch-system dimensions: 0.443" ID, 0.75" OD, and 0.057-0.067" thickness range for consistent performance with 7/16" screws. The nylon material meets industrial standards for flat washers with Rockwell R115 hardness rating. Fully compliant with RoHS 3 (2015/863/EU) regulations, containing no restricted hazardous substances. Temperature performance certified for continuous operation between -40°F and 180°F without deformation or loss of mechanical properties.