S-91583A115 1/2"-13 x 1 1/2" 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 construction, ideal for outdoor and harsh industrial environments
- Superior structural integrity with 120,000 PSI tensile strength and Rockwell C19 hardness for demanding applications
- Reliable fastening performance with Class 2A thread fit and UNC coarse threads ensuring secure installation
- Optimized load distribution through partially threaded design with 1" thread length and ½" grip length
- Industry-standard compliance meeting ASME B18.2.6, ASTM A325, and ASTM F3125 specifications
- Easy installation and removal with external hex drive and 7/8" head width for standard wrench compatibility
- Environmental regulation compliance with RoHS 3 and REACH standards for global industrial use
Professional Applications & Engineering Value
These Grade A325 hex head screws deliver critical engineering solutions for structural steel connections, heavy machinery assembly, and construction frameworks where vibration resistance and long-term reliability are paramount. The hot-dipped galvanized steel construction provides a sacrificial zinc coating that prevents rust formation in corrosive environments, while the UNC coarse threads maintain holding power under dynamic loads. The partially threaded design concentrates clamping force precisely where needed, preventing joint loosening in structural applications. These industrial fasteners are engineered to withstand extreme tension and shear forces, making them ideal for bridge construction, transmission towers, and heavy equipment manufacturing where failure is not an option.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerances and 1/2"-13 UNC coarse threading. Complies with ASME B18.2.6 dimensional specifications and ASTM A325/ASTM F3125 material and mechanical property requirements. Meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards for hazardous substance restrictions.
