S-91247A862 3/4"-10 x 7 1/2" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 Steel Hex 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 load-bearing capacity with 120,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through zinc plating that protects against environmental degradation
- Optimized thread engagement with UNC coarse thread design ensuring faster assembly and superior holding power
- Precise mechanical properties featuring Rockwell C25 hardness for consistent durability and wear resistance
- Enhanced installation efficiency with external hex drive allowing high torque application and secure fastening
- Controlled thread engagement through partial threading that prevents over-tightening in specific applications
- Industry-standard compatibility with Class 2A thread fit ensuring reliable interchangeability and proper mating
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers critical engineering solutions for heavy machinery, structural assemblies, and industrial equipment where vibration resistance and sustained clamping force are paramount. The zinc plated steel construction combats corrosion in harsh environments, while the 3/4"-10 UNC coarse thread configuration provides rapid installation and superior pull-out resistance in wood, metal, and composite materials. The partially threaded design concentrates clamping force precisely where needed, preventing joint loosening in high-vibration applications. With external hex drive compatibility, maintenance crews can achieve proper preload using standard tools, reducing installation time and ensuring consistent performance across industrial fastening applications.
Specification Summary & Compliance
Manufactured to exacting Class 2A thread fit tolerances with 3/4"-10 UNC coarse thread specifications, this fastener ensures precise mating and reliable performance. Compliance with ASME B18.2.1 and SAE J429 Grade 5 standards guarantees consistent mechanical properties and dimensional accuracy. The product meets stringent environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards, ensuring safe use across global industrial markets.
