S-94610A440 4.8 mm ID x 12 mm OD ASME B18.22M Ultra-High-Temperature Ceramic Washers

Key Features & Benefits at a Glance

• Extreme Temperature Resilience – Maintains structural integrity and performance in environments up to 3000°F, preventing failure in high-heat applications.
• Superior Electrical Insulation – Ceramic material provides excellent non-conductive properties, ideal for electrical assemblies requiring isolation.
• Precise Metric Sizing – Designed with 4.8 mm ID and 12 mm OD for exact fit with M4 screws, ensuring secure fastening and load distribution.
• ASME B18.22M Compliance – Manufactured to recognized industrial standards for consistent quality, dimensional accuracy, and reliable performance.
• RoHS 3 & REACH Compliant – Free from hazardous substances, meeting strict environmental and safety regulations for global use.
• Exceptional Durability – Ceramic construction resists corrosion, wear, and thermal shock, extending service life in demanding conditions.
• Versatile Off-White Design – Neutral color and flat profile suit various industrial aesthetics while providing consistent performance.

Professional Applications & Engineering Value

This ceramic flat washer is engineered to address critical challenges in high-temperature and electrically sensitive environments. Its ceramic material offers inherent thermal stability, preventing deformation and loss of clamping force under extreme heat up to 3000°F—common in furnaces, aerospace, and power generation systems. The flat washer design ensures even load distribution for M4 screws, reducing stress concentration and enhancing joint reliability. Additionally, the electrical insulation properties make it indispensable in electronics and electrical assemblies where short-circuit prevention is paramount. By combining metric dimensions with compliance to ASME B18.22M, it delivers precision and interoperability in global engineering projects, solving durability and safety concerns in aggressive operational settings.

Specification Summary & Compliance

This washer features precise metric dimensions with an inner diameter of 4.8 mm, outer diameter of 12 mm, and thickness ranging from 1.0 to 1.4 mm, tailored for M4 screw size. It conforms to ASME B18.22M for dimensional and mechanical consistency. The product is verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and health standards without hazardous substances.