S-91571A316 3/4"-10 x 8" 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 tensile strength of 120,000 psi ensures reliable performance in demanding structural and construction applications
- Precision Class 2A thread fit provides smooth assembly and consistent clamping force in industrial settings
- Partially threaded design with 6 5/8" grip length optimizes load distribution and prevents joint slippage
- Rockwell C19 hardness rating delivers superior wear resistance and long-term durability
- Coarse UNC threading enables faster installation and reduced cross-threading risks in field applications
- Full compliance with ASTM A325/F3125 and ASME B18.2.6 guarantees consistent quality and engineering reliability
- RoHS 3 and REACH compliance ensures environmental responsibility without compromising performance
Professional Applications & Engineering Value
Engineered for structural steel connections and heavy construction applications, these Grade A325 hex head screws solve critical challenges in load-bearing assemblies. The 3/4"-10 UNC coarse thread configuration combined with partial threading creates optimal stress distribution across connected members, preventing premature failure at thread roots. The external hex drive design accommodates high-torque installation with standard tools, while the steel construction with controlled hardness maintains integrity under dynamic loads. These industrial hex screws deliver predictable performance in bridge construction, structural framing, and heavy machinery where 120,000 psi tensile strength and consistent clamping force are non-negotiable requirements.
Specification Summary & Compliance
This 8" length hex head screw features 3/4"-10 UNC coarse threads with Class 2A thread fit tolerances, ensuring precision engagement. Manufacturing adheres to ASME B18.2.6 dimensional specifications and ASTM A325/ASTM F3125 material and mechanical property requirements. The product maintains full compliance with RoHS 3 (2015/863/EU) restrictions and REACH (EC 1907/2006) regulations, including current SVHC provisions, making it suitable for global industrial applications with environmental responsibility.
