S-94555A110 4-40 x 1/2" Ceramic Hex Head Screws
Ceramic Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional thermal stability with alumina ceramic construction, maintaining integrity in environments up to 3000°F for reliable performance in extreme heat applications
- Superior corrosion and chemical resistance due to the inert off-white alumina material, eliminating rust and degradation in harsh industrial settings
- Excellent electrical insulation properties preventing current conduction, ideal for electronic assemblies and high-voltage equipment
- Precise Class 2A thread fit with UNC coarse threading ensures easy installation and secure fastening in various materials
- Full-length threading provides maximum grip and load distribution along the entire 1/2" length for enhanced joint strength
- External hex drive design allows for standard tool compatibility and high torque application without stripping
- Compliance with RoHS 3 and REACH regulations guarantees environmental safety and unrestricted use in regulated industries
Professional Applications & Engineering Value
Engineered for demanding conditions, this 4-40 UNC alumina ceramic hex head screw solves critical challenges in high-temperature and corrosive environments. Its alumina ceramic composition delivers outstanding thermal shock resistance and electrical insulation, making it indispensable in furnace linings, semiconductor manufacturing, and aerospace components where metal fasteners would fail. The coarse UNC threading and Class 2A fit facilitate quick assembly in brittle materials, while the external hex drive ensures firm tool engagement. By withstanding temperatures up to 3000°F and offering inherent corrosion resistance, it extends equipment lifespan and reduces maintenance in industrial heating systems, chemical processing, and power generation applications.
Specification Summary & Compliance
This screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It features a 4-40 thread size, 1/2" length, and coarse thread spacing for optimal performance. Manufactured from high-purity alumina ceramic, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.
