S-91255A624 3/8"-16 x 1" 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
- Superior corrosion resistance with black-oxide coating on alloy steel, extending service life in demanding industrial environments.
- High-torque assembly capability via the 7/32" hex drive, preventing cam-out and ensuring secure, efficient installation.
- Exceptional load-bearing strength with 120,000 psi tensile strength and Rockwell C39 hardness for reliable performance under stress.
- Precise, vibration-resistant fit thanks to Class 3A thread tolerance, minimizing loosening in high-vibration applications.
- Wide compatibility and easy engagement with UNC coarse threads, facilitating quick assembly and disassembly.
- Low-profile, rounded button head design reduces snagging risks and provides a finished appearance in confined spaces.
- Full threading along the 1" length ensures maximum grip and uniform clamping force across the entire fastener.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these 3/8"-16 UNC rounded head hex drive screws address critical challenges in machinery, automotive, and structural assemblies. The black-oxide alloy steel construction combats rust and wear, while the Class 3A thread fit and coarse threading deliver consistent, vibration-resistant connections that withstand dynamic loads. The hex drive and fully threaded design enable rapid, high-torque installations, reducing assembly time and improving productivity in automated or manual settings. Ideal for securing components where reliability and industrial durability are paramount, these screws prevent failures in high-stress environments.
Specification Summary & Compliance
This screw features precise Class 3A thread fit per UNC standards, with a 1" length, 0.656" head diameter, and 7/32" hex drive. Manufacturing adheres to ASME B18.3 and ASTM F835 specifications, ensuring dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible and safe usage in global markets.
