S-91583A187 3/4"-10 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 with hot-dipped galvanized steel coating, providing long-lasting protection in harsh industrial environments
- Superior structural integrity with Grade A325 classification and 120,000 psi tensile strength for critical load-bearing applications
- Optimized load distribution through partially threaded design with 2 3/8" grip length for maximum clamping force
- Reliable installation performance featuring UNC coarse threads and Class 2A fit for consistent torque values and reduced cross-threading risk
- Enhanced drive efficiency with external hex head design allowing high torque application using standard tools
- Proven durability with Rockwell C19 hardness maintaining structural integrity under repeated stress
- Broad compatibility with coarse thread spacing ensuring quick assembly in various structural applications
Professional Applications & Engineering Value
Engineered for structural steel connections and heavy construction applications, these Grade A325 hex head screws deliver critical performance where joint integrity is paramount. The hot-dipped galvanized steel construction provides superior corrosion protection for outdoor structures, bridges, and industrial facilities exposed to environmental elements. The partially threaded design concentrates clamping force precisely where needed, while the UNC coarse thread pattern ensures rapid installation in structural steel members. With 120,000 psi tensile strength and Rockwell C19 hardness, these fasteners maintain structural stability under dynamic loads and vibration, making them ideal for seismic applications and heavy machinery assembly where failure is not an option.
Specification Summary & Compliance
Manufactured to exacting Class 2A thread fit tolerances with 3/4"-10 UNC coarse thread specifications ensuring precision mating with standard nuts. Compliant with ASME B18.2.6, ASTM A325, and ASTM F3125 structural bolt standards for guaranteed performance in structural applications. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) requirements for sustainable manufacturing practices.
