S-91583A205 7/8"-9 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 corrosion resistance from hot-dipped galvanized steel, ideal for outdoor and harsh industrial environments.
- Superior tensile strength of 120,000 psi ensures reliable performance in high-stress structural applications.
- Rockwell C19 hardness provides excellent durability and resistance to wear and deformation.
- Fully threaded 7/8"-9 UNC coarse design offers faster installation and enhanced grip in various materials.
- Class 2A thread fit guarantees consistent, easy assembly without compromising on holding power.
- External hex drive and hex head allow for straightforward tightening with standard tools, reducing installation time.
- Compliance with major standards including ASME B18.2.6, ASTM A325, and ASTM F3125 ensures quality and interoperability.
Professional Applications & Engineering Value
This Grade A325 hex head screw is engineered to address critical challenges in structural and heavy-duty applications, such as construction, bridge building, and machinery assembly. Made from hot-dipped galvanized steel, it combats corrosion effectively, extending service life in exposed conditions. The 7/8"-9 UNC coarse thread and fully threaded design enhance load distribution and vibration resistance, preventing loosening under dynamic stresses. With a tensile strength of 120,000 psi and Rockwell C19 hardness, it withstands extreme forces, making it a dependable choice for projects requiring high-strength fastening solutions that meet rigorous industry standards.
Specification Summary & Compliance
This fastener features precise Class 2A thread fit and adheres to UNC coarse thread standards for consistent performance. It complies with ASME B18.2.6, ASTM A325, and ASTM F3125 specifications, ensuring dimensional accuracy and mechanical properties. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, supporting environmental and safety regulations in industrial use.
