S-91571A272 5/8"-11 x 2 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 load-bearing capacity with 120,000 PSI tensile strength for reliable performance in demanding structural applications
- Superior durability achieved through Rockwell C19 hardness and high-grade steel construction
- Secure fastening performance with Class 2A thread fit ensuring precise engagement and vibration resistance
- Optimized installation efficiency through UNC coarse threading and external hex drive design
- Versatile partial threading providing both threaded and unthreaded sections for optimal grip length control
- Industry-standard compliance meeting ASME B18.2.6, ASTM A325, and ASTM F3125 specifications
- Environmental responsibility with RoHS 3 and REACH compliance for sustainable industrial use
Professional Applications & Engineering Value
This Grade A325 hex head screw delivers critical engineering solutions for structural steel connections and heavy-duty construction applications. The partially threaded design with 1½" grip length ensures proper clamp load distribution while preventing thread damage in shear connections. Manufactured from high-strength steel with Rockwell C19 hardness, this fastener maintains integrity under extreme tension and vibration conditions. The 5/8"-11 UNC coarse thread provides rapid installation in structural steel, bridge construction, and industrial machinery, while the external hex drive accommodates high-torque applications. Meeting ASTM A325/F3125 specifications, this hex head screw offers reliable performance where structural integrity is paramount.
Specification Summary & Compliance
This 5/8"-11 hex head screw features Class 2A thread fit per ASME B18.2.6 standards, ensuring precise dimensional accuracy and interchangeability. The fastener complies with ASTM A325 and ASTM F3125 specifications for high-strength structural bolts, with 120,000 PSI minimum tensile strength and proper hardness requirements. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, making it suitable for various industrial and construction applications where material restrictions apply.
