S-91583A606 1/2"-13 x 3 3/4" ASME B18.2.6, ASTM A325, ASTM F3125 Medium-Strength Steel Heavy Hex Head Screws for Structural Applications
Medium-Strength Steel Heavy Hex Head Screws for Structural Applications
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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 through hot-dipped galvanized steel coating, ensuring long-term durability in harsh environments
- Superior structural integrity with Grade A325 certification and 120,000 PSI tensile strength for heavy-load applications
- Optimized clamping force from partially threaded design and 2 3/4" grip length for secure joint connections
- Enhanced installation efficiency with UNC coarse threads and external hex drive for quick assembly and disassembly
- Precise thread engagement with Class 2A fit ensuring reliable performance in structural applications
- Industry-standard compliance meeting ASME B18.2.6, ASTM A325, and ASTM F3125 specifications for quality assurance
- Environmental regulation adherence with RoHS 3 and REACH compliance for safe, sustainable industrial use
Professional Applications & Engineering Value
These Grade A325 hex head screws deliver critical engineering solutions for structural steel connections, bridge construction, and heavy machinery assembly. The hot-dipped galvanized steel construction provides superior corrosion protection in outdoor and high-moisture environments, while the UNC coarse thread design ensures rapid installation in structural steel applications. The partially threaded configuration with substantial 2 3/4" grip length concentrates clamping force precisely where needed, preventing joint slippage under dynamic loads. With 120,000 PSI tensile strength and Rockwell C19 hardness, these structural bolts maintain integrity in high-stress applications, making them ideal for construction projects requiring reliable, long-term fastening solutions that meet rigorous industry standards.
Specification Summary & Compliance
Manufactured to exacting Class 2A thread fit tolerances with 1/2"-13 UNC coarse threads and right-hand threading. Complies with ASME B18.2.6, ASTM A325, and ASTM F3125 specifications for structural fasteners. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features external hex drive with 7/8" head width and 3 3/4" overall length for standardized installation requirements.
