S-91355A072 8-32 x 1/4" ASME B18.3, ASTM F835 Steel Flanged Button Head Hex-Drive Screws
Steel Flanged Button Head Hex-Drive 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
- Superior corrosion resistance with Black-Oxide finish, extending service life in demanding industrial environments.
- Exceptional mechanical strength from Alloy Steel, providing 120,000 psi tensile strength for high-stress applications.
- Precise, reliable fastening ensured by Class 3A thread fit, minimizing the risk of cross-threading and loosening.
- Enhanced torque transmission via the 3/32" Hex Drive, allowing for secure installation with standard tools.
- Increased bearing surface from the flanged, wide button head design, distributing clamp load effectively and reducing surface damage.
- Wide compatibility with UNC coarse threads and right-hand direction, suitable for common assembly requirements.
- Full threading along the 1/4" length ensures maximum grip and holding power in various material thicknesses.
Professional Applications & Engineering Value
This 8-32 UNC Class 3A Rounded Head Screw is engineered to address critical challenges in industrial assembly, such as vibration resistance and long-term reliability. Constructed from Black-Oxide Alloy Steel, it combats corrosion in harsh conditions, while the Rockwell C39 hardness and 120,000 psi tensile strength prevent stripping and failure under load. The flanged button head and coarse thread spacing provide excellent clamp force and quick installation in metal, plastic, and wood components. Ideal for machinery, automotive, and electronics, its hex drive ensures efficient torque application, reducing assembly time and improving production throughput.
Specification Summary & Compliance
This screw features precise Class 3A thread fit and UNC coarse thread with right-hand direction, ensuring high dimensional accuracy. It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, confirming its suitability for global industrial use without hazardous substances.
