S-91247A487 3/4"-16 x 6" 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
- Superior load-bearing capacity with 120,000 psi tensile strength, ideal for high-stress industrial assemblies
- Enhanced corrosion resistance from zinc plating, extending service life in demanding environments
- Precise thread engagement with Class 2A UNF fine threads for secure, vibration-resistant connections
- Reliable mechanical properties backed by Grade 5 certification and Rockwell C25 hardness
- Optimized torque transmission through external hex drive and 1 1/8" head width
- Reduced assembly weight with partial threading while maintaining 1 3/4" minimum thread length
- Full regulatory compliance meeting ASME B18.2.1, SAE J429, RoHS 3 and REACH standards
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers exceptional engineering value for heavy-duty industrial applications where structural integrity is paramount. The 3/4"-16 UNF fine threading provides superior resistance to vibrational loosening in machinery, construction equipment, and transportation systems. The zinc plated steel construction offers critical corrosion protection for outdoor or humid environments, while the external hex drive ensures efficient installation with standard tools. With partial threading optimizing the strength-to-weight ratio, this fastener solves common challenges in structural steel connections, heavy machinery assembly, and industrial equipment maintenance where both durability and precision are required.
Specification Summary & Compliance
Manufactured to exacting Class 2A thread fit tolerances with UNF fine thread specifications. Complies with ASME B18.2.1 and SAE J429 standards for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features right-hand threading with 6" overall length and 1 3/4" minimum thread length for consistent performance across industrial applications.
