S-95610A460 21 mm ID x 37 mm OD Plastic Washers
Plastic Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Exceptional corrosion resistance due to Nylon material, eliminating rust and reducing maintenance in harsh environments.
- Reliable electrical insulation properties ideal for preventing galvanic corrosion and electrical short circuits in assemblies.
- Wide operating temperature range from -40°F to 180°F, ensuring consistent performance under thermal stress.
- High durability with Rockwell R120 hardness, providing excellent load distribution and surface protection for M20 screws.
- Precise dimensional fit with 21mm ID and 37mm OD, offering secure fastening and vibration resistance in metric assemblies.
- Environmental compliance with RoHS 3 (2015/863/EU), supporting sustainable and safe manufacturing practices.
- Lightweight and non-magnetic design, reducing overall assembly weight and interference in sensitive electronic applications.
Professional Applications & Engineering Value
This M20 metric flat washer is engineered to address common industrial challenges such as corrosion, electrical conductivity, and thermal instability. Made from black Nylon plastic, it provides inherent resistance to moisture, chemicals, and oxidation, making it ideal for outdoor, marine, and chemical processing equipment. The 21mm internal diameter and 37mm outer diameter ensure a precise fit for M20 screws, distributing clamp load effectively to prevent joint loosening under vibration. Its temperature-resistant properties from -40°F to 180°F allow reliable use in automotive, HVAC, and electronics, where thermal cycling is frequent. By combining electrical insulation with Rockwell R120 hardness, this washer reduces the risk of galvanic corrosion between dissimilar metals and enhances the longevity of fastened components in industrial applications.
Specification Summary & Compliance
This flat washer adheres to metric system dimensions with an ID of 21mm, OD of 37mm, and thickness of 2.7-3.3 mm, designed for M20 screw size. Manufactured from Nylon plastic with a Rockwell R120 hardness, it meets general industrial standards for flat washers. The product is fully compliant with RoHS 3 (2015/863/EU), ensuring it is free from hazardous substances, and operates effectively within a temperature range of -40°F to 180°F.
