S-90940A414 5.5 mm ID x 12 mm OD Plastic Washers

Key Features & Benefits at a Glance

• Superior chemical resistance ensures reliable performance in harsh industrial environments, extending service life.
• Excellent electrical insulation properties from polycarbonate material prevent electrical conductivity, enhancing safety in electrical assemblies.
• High-temperature tolerance up to 212°F maintains structural integrity and dimensional stability under thermal stress.
• Exceptional Rockwell R120 hardness provides durable, long-lasting support and resistance to deformation under load.
• Crystal-clear transparency allows for easy visual inspection and alignment in precision applications without obstructing components.
• Precise M5 screw compatibility with 5.5mm ID and 12mm OD ensures accurate fit and even load distribution in metric assemblies.
• Full RoHS 3 and REACH compliance guarantees environmental safety and regulatory adherence for global industrial use.

Professional Applications & Engineering Value

This M5 clear polycarbonate flat washer is engineered to address common industrial challenges such as corrosion, electrical shorting, and thermal degradation. Made from high-grade polycarbonate plastic, it offers inherent chemical resistance, making it ideal for applications exposed to solvents or aggressive substances. Its transparent design and non-conductive properties are crucial in electronics, medical devices, and optical equipment, where visibility and electrical insulation are paramount. The precise metric dimensions (5.5mm ID x 12mm OD) and consistent thickness ensure reliable spacing and vibration damping, reducing wear in industrial washers and assembly systems. By combining durability with regulatory compliance, this washer delivers long-term value in demanding environments.

Specification Summary & Compliance

This flat washer features a 5.5mm inner diameter and 12mm outer diameter with a thickness range of 0.7-0.9 mm, designed for M5 screw sizes in metric systems. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances. The material achieves a Rockwell R120 hardness and operates effectively within a temperature range up to 212°F, supporting consistent performance in various industrial applications.