S-90718A230 10.5 mm ID x 21 mm OD UL 94 HB Plastic Washers

Key Features & Benefits at a Glance

• Superior Durability & Strength: Glass-filled nylon construction with Rockwell M111 hardness ensures excellent resistance to wear and deformation under load.
• Reliable Electrical Insulation: Non-conductive plastic material provides safe electrical isolation, ideal for electronic and electrical assemblies.
• High-Temperature Resilience: Withstands continuous exposure up to 220°F (104°C), maintaining performance in demanding thermal environments.
• Lightweight & Corrosion-Resistant: Plastic composition offers a lightweight alternative to metal, immune to rust and chemical corrosion.
• Precision Fit for M10 Screws: 10.5mm inner diameter and 21mm outer diameter ensure a secure, flush fit, distributing load evenly.
• Flame Retardant Safety: UL 94 HB certification confirms slow burning characteristics, enhancing fire safety in various applications.
• Global Compliance Assurance: Meets RoHS 3 and REACH environmental standards, ensuring safe use in regulated markets worldwide.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these M10 metric flat washers address critical needs for electrical insulation, vibration dampening, and corrosion resistance. The glass-filled nylon plastic material combines high tensile strength with low moisture absorption, preventing degradation in humid conditions. This makes them ideal for electrical enclosures, automotive assemblies, and machinery where non-conductive components are essential. Their black color provides UV resistance for outdoor use, while the precise 10.5x21mm dimensions ensure consistent performance with M10 screw sizes, reducing assembly errors and improving operational reliability.

Specification Summary & Compliance

This flat washer features a metric system design with an inner diameter of 10.5mm and outer diameter of 21mm, compatible with M10 screws. It conforms to UL 94 HB flammability standards and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring no restricted substances are present. The glass-filled nylon material maintains dimensional stability across its operating temperature range up to 220°F, meeting general engineering tolerances for reliable performance in industrial settings.