S-91583A611 1/2"-13 x 5" 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 with hot-dipped galvanized steel coating for long-lasting performance in harsh environments
- Superior structural integrity with Grade A325 classification and 120,000 psi tensile strength for heavy-duty applications
- Optimized load distribution through 4" grip length and partial threading design
- Reliable installation efficiency with external hex drive and UNC coarse threads for quick assembly
- Precise thread engagement with Class 2A thread fit ensuring consistent fastening performance
- Enhanced durability with Rockwell C19 hardness maintaining structural integrity under stress
- Regulatory compliance assurance meeting ASME, ASTM, RoHS 3 and REACH standards
Professional Applications & Engineering Value
Engineered for structural steel connections and heavy construction applications, these Grade A325 hex head screws deliver critical performance where failure is not an option. The hot-dipped galvanized steel construction provides superior corrosion protection for outdoor and industrial environments, while the partial threading design ensures optimal clamp load distribution across the 4" grip length. The UNC coarse threads and external hex drive facilitate rapid installation in structural steel framing, bridge construction, and heavy machinery assembly. With 120,000 psi tensile strength and Rockwell C19 hardness, these fasteners maintain structural integrity under extreme loads and vibration, making them ideal for seismic-resistant structures and high-stress industrial applications where reliability is paramount.
Specification Summary & Compliance
This 1/2"-13 hex head screw features Class 2A thread fit tolerance with right-hand UNC coarse threading and complies with ASME B18.2.6, ASTM A325, and ASTM F3125 manufacturing specifications. The fastener meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and industrial safety standards are maintained throughout its service life.
