S-90940A411 2.1 mm ID x 4 mm OD Plastic Washers

Key Features & Benefits at a Glance

• Superior chemical resistance from polycarbonate material, ideal for harsh industrial environments
• Excellent thermal stability withstanding temperatures up to 212°F without deformation
• Precision dimensional control ensures perfect fit for M2 screws with 2.1mm ID and 4mm OD
• Enhanced durability with Rockwell R120 hardness rating for long-lasting performance
• Crystal clear visibility allows for easy inspection and aesthetic applications
• Regulatory compliance with RoHS 3 and REACH standards for global market acceptance
• Consistent thickness range (0.4-0.6mm) provides reliable spacing and load distribution

Professional Applications & Engineering Value

These M2 metric flat washers made from polycarbonate plastic deliver exceptional value in applications requiring both chemical resistance and thermal stability. The clear material allows for visual inspection in precision assemblies, while the Rockwell R120 hardness ensures dimensional stability under load. Perfect for industrial applications in electronics, medical devices, and laboratory equipment where chemical resistant washers are essential. The metric system compatibility and precise 2.1mm inner diameter guarantee perfect alignment with M2 fasteners, preventing loosening and ensuring secure connections in vibration-prone environments.

Specification Summary & Compliance

Manufactured to precise metric dimensions with 2.1mm inner diameter, 4mm outer diameter, and 0.4-0.6mm thickness range. These flat washers meet industry standards for dimensional accuracy and are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for international industrial applications.