S-95611A146 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
- Superior corrosion resistance for long-lasting performance in humid or chemical environments
- Excellent electrical insulation properties prevent current leakage in electrical assemblies
- Consistent dimensional stability with precise 21mm ID and 37mm OD for perfect M20 screw compatibility
- Durable PVC construction with Rockwell D65 hardness maintains shape under pressure
- Temperature resilience up to 140°F ensures reliable operation in various industrial settings
- Regulatory compliance with RoHS 3 and REACH standards for safe, environmentally responsible manufacturing
- Cost-effective alternative to metal washers where electrical isolation or chemical resistance is required
Professional Applications & Engineering Value
This PVC plastic flat washer delivers exceptional engineering value in applications where metal components would fail. The gray PVC material provides inherent corrosion resistance, making it ideal for chemical processing, marine environments, and outdoor installations. As a natural electrical insulator, it prevents galvanic corrosion and electrical shorts in assemblies involving M20 metric screws. The precise 21mm internal diameter and 37mm outer diameter ensure perfect fitment while the controlled 1.3-1.7mm thickness maintains consistent load distribution. These flat washers are particularly valuable in electrical enclosures, plumbing systems, and food processing equipment where non-conductive, non-corrosive fastening solutions are essential for long-term reliability.
Specification Summary & Compliance
This metric flat washer features precise dimensional specifications with 21mm ID, 37mm OD, and 1.3-1.7mm thickness range, engineered for M20 screw applications. Manufactured from high-grade PVC plastic with Rockwell D65 hardness rating, the washer maintains dimensional integrity across its operational temperature range up to 140°F. The product fully complies with RoHS 3 (2015/863/EU) standards and REACH (EC 1907/2006) regulations (updated 06/14/2023, 235 SVHC), ensuring environmental responsibility and workplace safety.
