S-91263A762 5/16"-24 x 1 1/2" ASTM F835 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat 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
- Superior corrosion resistance with zinc-plated alloy steel construction for extended service life in demanding environments
- Exceptional tensile strength rated at 130,000 PSI ensures reliable performance under heavy loads and vibration
- Precision Class 3A fine threading provides superior fit and vibration resistance in critical applications
- Optimal countersinking capability with 82° flat head profile for flush mounting and clean finished appearance
- Enhanced installation efficiency with hex drive design allowing high torque application without slippage
- Full threading along entire length enables maximum grip and adjustment flexibility in assembly
- Industry compliance assurance meeting ASTM F835 specifications for consistent quality and performance
Professional Applications & Engineering Value
These 5/16"-24 UNF flat head screws deliver critical engineering solutions where vibration resistance and high-strength fastening are paramount. The zinc-plated alloy steel construction combined with Rockwell C39 hardness provides exceptional durability against wear and environmental factors. The Class 3A fine threading ensures precise fit in machinery, automotive, and industrial equipment where loosening under dynamic loads poses significant operational risks. The 82° countersink angle and flat head design facilitate seamless integration in applications requiring flush mounting surfaces, while the hex drive configuration enables efficient installation in confined spaces common in manufacturing and assembly operations.
Specification Summary & Compliance
Manufactured to exacting Class 3A thread fit tolerances with UNF fine threading (5/16"-24) and fully threaded design. Compliant with ASTM F835 specifications for mechanical properties and performance standards. Meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring suitability for global industrial applications with strict chemical substance restrictions.
