S-91253A676 7/16"-14 x 2 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
- Exceptional corrosion resistance with black-oxide coating, ideal for harsh industrial environments
- Superior tensile strength (130,000 psi) ensures reliable performance under heavy loads
- Precise Class 3A thread fit provides secure, vibration-resistant connections in critical assemblies
- Partially threaded design allows for optimal clamping force distribution across joint surfaces
- Rockwell C39 hardness rating delivers excellent wear resistance and long-term durability
- Hex drive compatibility enables high-torque installation with standard industrial tools
- 82° countersink angle ensures flush mounting for streamlined surfaces and safety
Professional Applications & Engineering Value
These 7/16"-14 UNC flat head screws with black-oxide alloy steel construction address critical engineering challenges in heavy machinery, structural frameworks, and industrial equipment. The coarse thread design provides superior grip in softer materials and faster installation times, while the partially threaded configuration prevents joint loosening under dynamic loads. The hex drive system ensures maximum torque transfer during assembly, reducing installation errors. Engineered for applications requiring high tensile strength and corrosion resistance, these fasteners maintain integrity in demanding environments including outdoor equipment, automotive assemblies, and construction projects where vibration resistance and long-term reliability are paramount.
Specification Summary & Compliance
Manufactured to exact Class 3A thread fit tolerances with UNC coarse threading (7/16"-14). Complies with ASTM F835 manufacturing specifications for mechanical properties and dimensional accuracy. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards for hazardous substance restrictions. Features 2 1/2" length with 1 3/8" minimum thread length and standard 82° countersink angle for universal compatibility.
