S-95647A168 1.7 mm ID x 4 mm OD Plastic Washers

Key Features & Benefits at a Glance

• Superior chemical resistance from Delrin® Acetal Plastic material protects against degradation in harsh industrial environments
• Excellent electrical insulation properties prevent current leakage and short circuits in electronic assemblies
• High durability performance with Rockwell M90 hardness ensures long-lasting service life under mechanical stress
• Reliable thermal stability maintains structural integrity at temperatures up to 180°F (82°C)
• Precision dimensional accuracy with 1.7mm ID and 4mm OD ensures perfect fit for M1.6 screw applications
• Environmentally compliant operation with RoHS 3 and REACH certification for global manufacturing standards
• Minimal friction surface reduces wear on mating components while providing smooth assembly

Professional Applications & Engineering Value

These M1.6 Delrin® Acetal Plastic flat washers deliver critical engineering solutions where metal alternatives fail. The white acetal plastic construction provides exceptional chemical resistance against solvents, fuels, and cleaning agents, making them ideal for automotive, aerospace, and chemical processing equipment. Their non-conductive properties prevent galvanic corrosion and electrical interference in sensitive electronic assemblies and PCB applications. The metric dimensions (1.7x4x0.2-0.4mm) ensure precise fitment for M1.6 screw sizes in compact designs, while the low moisture absorption maintains dimensional stability in humid environments. These washers serve as essential components in medical devices, food processing machinery, and precision instruments where corrosion resistance and thermal stability are paramount.

Specification Summary & Compliance

This flat washer features precise metric dimensions with 1.7mm inner diameter, 4mm outer diameter, and 0.2-0.4mm thickness range, engineered for M1.6 screw applications. Manufactured from Delrin® Acetal Plastic with Rockwell M90 hardness rating, the component delivers consistent performance across its specified temperature range. The product fully complies with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) standards, ensuring environmental responsibility and safety in global supply chains. All manufacturing processes adhere to international quality standards for plastic washers in industrial applications.