S-91255A813 10-24 x 2 1/2" ASTM F835 Steel Button Head Hex-Drive Screws
Steel 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
- Exceptional corrosion resistance with Black-Oxide coating, extending service life in demanding industrial environments.
- High tensile strength of 120,000 psi ensures reliable performance under heavy loads and vibration.
- Precise Class 3A thread fit provides superior engagement and reduces the risk of cross-threading during installation.
- Rockwell C39 hardness offers excellent wear resistance, maintaining thread integrity over repeated use.
- Hex drive compatibility (1/8") allows for high-torque application with standard tools, speeding up assembly.
- Partially threaded design enables secure clamping without unnecessary thread engagement, ideal for specific joint requirements.
- Compliance with ASME B18.3 and ASTM F835 guarantees consistent quality and interoperability in professional applications.
Professional Applications & Engineering Value
These 10-24 UNC Rounded Head Screws are engineered to address critical challenges in industrial assembly, such as vibration loosening and material fatigue. The Black-Oxide Alloy Steel construction provides a durable barrier against rust and oxidation, making them suitable for machinery, automotive, and outdoor equipment where environmental exposure is a concern. The coarse thread spacing and Class 3A thread fit ensure quick, secure fastening in metals and plastics, reducing installation time while maintaining high clamp load. With a rounded button head profile, they offer a low-profile finish that minimizes snagging, enhancing safety and aesthetics in visible assemblies. Ideal for heavy-duty fastening, these screws deliver reliable performance in high-stress applications, from conveyor systems to structural frameworks.
Specification Summary & Compliance
This product adheres to Class 3A thread fit per UNC standards, ensuring precise dimensional accuracy. Manufacturing complies with ASME B18.3 and ASTM F835 specifications for consistent quality. Environmental and safety standards include full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), supporting sustainable and safe usage in global markets.
