S-95647A166 1.3 mm ID x 3.8 mm OD Plastic Washers

Key Features & Benefits at a Glance

• Superior chemical resistance prevents degradation from oils, solvents, and moisture, ensuring long-term reliability in harsh industrial environments
• Excellent dimensional stability maintains precise 1.3mm ID and 3.8mm OD tolerances under varying conditions for consistent performance
• Rockwell M90 hardness rating provides exceptional durability and wear resistance for repeated assembly operations
• 180°F maximum temperature rating withstands thermal cycling in electronic and precision mechanical applications
• Lightweight Delrin® Acetal construction reduces overall assembly weight while providing electrical insulation properties
• Ultra-thin 0.2-0.4mm profile enables space-saving designs in compact M1.2 screw applications
• Full regulatory compliance with RoHS 3 and REACH standards ensures environmental responsibility and global market acceptance

Professional Applications & Engineering Value

These precision Delrin® Acetal Plastic Flat Washers deliver critical engineering solutions where metal alternatives fail. The metric flat washer design with 1.3mm internal diameter perfectly accommodates M1.2 screws while providing essential load distribution in miniature assemblies. The white plastic washer material offers inherent corrosion resistance that eliminates galvanic compatibility issues in electronic enclosures and medical devices. Engineers specify these chemical resistant washers for applications requiring non-conductive, non-marring components that maintain dimensional stability across temperature fluctuations. The 0.2-0.4mm thickness range allows precise adjustment of assembly stack heights while the low-friction Delrin® surface prevents thread damage during torque-critical fastening operations.

Specification Summary & Compliance

This metric flat washer features precision dimensions of 1.3mm ID × 3.8mm OD with thickness tolerance of 0.2-0.4mm, engineered for M1.2 screw applications. Manufactured from Delrin® Acetal Plastic with Rockwell M90 hardness rating and 180°F maximum operating temperature. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards for industrial components.