S-90295A426 0.234" ID x 0.625" OD Plastic Washers

Key Features & Benefits at a Glance

• Corrosion-resistant nylon construction eliminates rust and chemical degradation, ensuring long-term reliability in harsh environments.
• Excellent electrical insulation properties prevent current leakage and short circuits, enhancing safety in electrical assemblies.
• Wide operating temperature range from -40°F to 180°F maintains performance integrity in both freezing and elevated heat conditions.
• Precise dimensional fit with 0.234" ID and 0.625" OD ensures secure seating and uniform load distribution for No. 12 screws.
• Rockwell R115 hardness rating provides superior abrasion resistance and durability under repeated stress.
• Full compliance with RoHS 3 and REACH regulations guarantees environmental safety and global market acceptance.
• Lightweight and non-magnetic properties reduce assembly weight and prevent interference in sensitive electronic applications.

Professional Applications & Engineering Value

This nylon plastic flat washer is engineered to address critical challenges in industrial and electronic assemblies where metal fasteners fail. Its inherent corrosion resistance makes it ideal for chemical processing, marine, and outdoor equipment, eliminating galvanic corrosion risks when paired with dissimilar metals. The electrical insulating capability is vital in PCB mounting, electrical enclosures, and automotive electronics, preventing ground faults and energy loss. With a stable performance across a broad temperature spectrum from -40°F to 180°F, it ensures reliable sealing and vibration damping in HVAC systems, automotive components, and machinery exposed to thermal cycling. The precise No. 12 screw size compatibility and flat washer design provide consistent clamping force, reducing loosening in high-vibration environments and extending service life.

Specification Summary & Compliance

This flat washer conforms to standard inch system dimensions with an inner diameter of 0.234", outer diameter of 0.625", and thickness ranging from 0.054" to 0.073", ensuring precise fit for No. 12 screw applications. Manufactured from nylon plastic with a Rockwell R115 hardness, it meets general industrial requirements for mechanical strength and wear resistance. 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 supporting sustainable procurement practices.