S-91571A443 1"-8 x 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 load-bearing capacity with 120,000 psi tensile strength for reliable performance in critical structural connections
- Superior hardness and durability with Rockwell C19 rating to resist deformation under heavy loads and repeated stress
- Precise thread engagement through Class 2A thread fit ensuring consistent clamping force and vibration resistance
- Quick installation advantage with coarse UNC threading that reduces assembly time in structural steel applications
- Full-threaded design benefit providing maximum grip length and uniform stress distribution along the entire fastener
- Heavy-duty construction compatibility with external hex drive allowing high torque application using standard tools
- Regulatory compliance assurance meeting both performance standards and environmental regulations for global projects
Professional Applications & Engineering Value
Engineered for structural steel connections in construction and heavy industrial applications, these Grade A325 hex head screws solve critical fastening challenges where joint integrity is paramount. The combination of high-strength steel material and fully threaded UNC configuration ensures maximum load transfer capacity while resisting loosening under dynamic loads. The coarse thread spacing provides superior performance in structural steel assemblies by allowing faster installation without compromising joint strength. These heavy-duty structural screws are specifically designed to maintain clamping force in demanding environments, making them ideal for construction applications requiring predictable, reliable performance under substantial tensile and shear stresses.
Specification Summary & Compliance
This 1"-8 UNC hex head screw features Class 2A thread fit tolerance for precise engagement and maintains dimensional accuracy per ASME B18.2.6 specifications. Manufactured to ASTM A325 and ASTM F3125 standards for structural bolting applications. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial and construction projects.
