S-95649A340 5.3 mm ID x 11 mm OD Plastic Washers

Key Features & Benefits at a Glance

• Superior chemical resistance to protect against corrosion and degradation in harsh industrial environments
• Excellent low-friction properties for smooth assembly and reduced wear on mating surfaces
• High-impact strength and durability from UHMW polyethylene material for long service life
• Precise metric sizing (5.3mm ID, 11mm OD) ensures perfect fit and secure fastening with M5 screws
• Wide temperature tolerance up to 180°F (82°C) for reliable performance in varied operating conditions
• Full regulatory compliance with RoHS 3 and REACH standards for safe use in regulated industries
• Non-conductive and lightweight off-white plastic construction ideal for electrical and weight-sensitive applications

Professional Applications & Engineering Value

These UHMW plastic flat washers deliver exceptional engineering value by solving common industrial fastening challenges. The ultra-high molecular weight polyethylene construction provides outstanding chemical resistance, making them ideal for applications exposed to corrosive substances, while their inherent low-friction characteristics prevent galling and reduce assembly torque requirements. The precise metric dimensions (5.3mm internal diameter, 11mm outer diameter) ensure perfect compatibility with M5 screws in machinery, automotive, and electronic assemblies. Their 180°F temperature resistance maintains performance stability across various operating environments, and the off-white color allows for easy identification in complex assemblies. These washers are particularly valuable in applications requiring electrical insulation, corrosion prevention, and reduced maintenance frequency.

Specification Summary & Compliance

This flat washer features precise metric dimensions with 5.3mm internal diameter, 11mm outer diameter, and 0.9-1.1mm thickness range, specifically engineered for M5 screw applications. Manufactured from UHMW plastic (ultra-high molecular weight polyethylene) in off-white color, the product maintains dimensional stability across its operational range. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial use worldwide. While hardness is not rated, the material's inherent properties provide excellent mechanical performance for general industrial fastening requirements.