S-91583A603 1/2"-13 x 2 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 structural integrity with Grade A325 classification and 120,000 psi tensile strength for reliable performance in critical applications
- Superior corrosion protection through hot-dipped galvanized steel construction, extending service life in harsh environments
- Optimized load distribution with partially threaded design and 1 3/4" grip length for enhanced joint stability
- Easy installation and removal featuring external hex drive and 7/8" head width for standard tool compatibility
- Precise thread engagement with UNC coarse threading and Class 2A fit ensuring consistent fastening performance
- Heavy-duty durability backed by Rockwell C19 hardness for resistance to deformation under extreme loads
- Regulatory compliance assurance meeting ASME, ASTM, RoHS 3 and REACH standards for quality and safety
Professional Applications & Engineering Value
These Grade A325 hex head structural bolts deliver critical engineering solutions for demanding construction and industrial applications. The hot-dipped galvanized steel construction provides exceptional corrosion resistance, making them ideal for outdoor structures, bridges, and industrial facilities exposed to environmental elements. The partially threaded design with UNC coarse threading ensures optimal stress distribution across connected materials, preventing joint failure in high-vibration environments. With 120,000 psi tensile strength and external hex drive configuration, these fasteners enable rapid installation while maintaining structural integrity in heavy machinery, steel framing, and load-bearing assemblies where reliability is paramount.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse thread profile (1/2"-13). Complies with ASME B18.2.6, ASTM A325, and ASTM F3125 specifications for structural bolting. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements. Features include 2 3/4" overall length, 1" thread length, and right-hand thread orientation for standardized installation procedures.
