S-91583A238 1"-8 x 3 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 with hot-dipped galvanized steel construction, ideal for outdoor and harsh industrial environments
- High tensile strength of 120,000 psi ensures reliable performance in heavy-duty structural and construction applications
- Rockwell C19 hardness provides superior durability and resistance to wear under high-stress conditions
- Class 2A thread fit with UNC coarse threading allows for easier assembly and better vibration resistance
- Partially threaded design offers optimal grip length for secure fastening in structural connections
- External hex drive enables quick installation and removal with standard tools, improving work efficiency
- Compliance with major industry standards including ASME B18.2.6, ASTM A325, and ASTM F3125 ensures consistent quality and reliability
Professional Applications & Engineering Value
These Grade A325 hex head screws are engineered to address critical challenges in structural steel connections and heavy construction projects. The hot-dipped galvanized steel construction provides superior protection against corrosion, extending service life in demanding environments like bridges, industrial facilities, and outdoor structures. The combination of 120,000 psi tensile strength and Rockwell C19 hardness ensures these partially threaded screws maintain integrity under extreme loads and vibration. The 1"-8 UNC coarse thread design facilitates faster installation while maintaining secure connections, making them ideal for structural bolting applications where reliability and speed are paramount. These industrial hex head screws deliver consistent performance in critical joints while meeting rigorous engineering specifications.
Specification Summary & Compliance
These hex head screws feature precise Class 2A thread fit with 1"-8 UNC coarse threading and 3 1/2" length. Manufactured to ASME B18.2.6, ASTM A325, and ASTM F3125 specifications, ensuring dimensional accuracy and mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety and substance restrictions.
