S-91247A860 3/4"-10 x 6 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, extending service life in harsh industrial environments
- Optimized torque transmission with external hex drive design for secure installation and removal
- Enhanced thread engagement with Class 2A thread fit ensuring precise assembly and vibration resistance
- Reduced cross-threading risk through UNC coarse threading for faster installation in various materials
- Controlled clamping force with partial threading design for precise load distribution
- Industry-standard compatibility meeting ASME B18.2.1 and SAE J429 specifications for reliable interchangeability
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers critical engineering solutions for heavy-duty assembly applications where structural integrity is paramount. The zinc plated steel construction provides essential corrosion protection for outdoor equipment, machinery frames, and structural steel connections exposed to environmental elements. The 3/4"-10 UNC coarse thread configuration ensures rapid installation in steel, aluminum, and cast iron components while maintaining superior pull-out resistance. The partial threading design concentrates clamping force precisely where needed, preventing joint loosening under dynamic loads and vibration. Engineered for construction equipment, industrial machinery, and transportation applications, this fastener combines 120,000 psi tensile strength with Rockwell C25 hardness to withstand extreme mechanical stresses without deformation or failure.
Specification Summary & Compliance
This inch system fastener features Class 2A thread fit tolerances per UNC standards with 3/4"-10 coarse thread specification and 6 1/2" length. Manufactured in compliance with ASME B18.2.1 and SAE J429 Grade 5 requirements, ensuring dimensional accuracy and mechanical properties. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety regulations for industrial use.
