S-91583A181 3/4"-10 x 3 1/4" 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 corrosion resistance with hot-dipped galvanized steel coating, ideal for outdoor and harsh industrial environments.
- High tensile strength of 120,000 PSI ensures reliable performance in heavy-duty structural applications.
- Partially threaded design with 1 3/8" thread length and 1 7/8" grip length provides optimal clamping force and vibration resistance.
- Class 2A thread fit and UNC coarse thread profile enable quick assembly and secure fastening in structural steel connections.
- External hex drive and hex head allow for easy installation with standard tools, reducing assembly time.
- Rockwell C19 hardness offers excellent durability and resistance to wear under high stress conditions.
- Compliance with ASME, ASTM, RoHS, and REACH standards guarantees quality and environmental safety for industrial use.
Professional Applications & Engineering Value
This Grade A325 hot-dipped galvanized steel hex head screw is engineered to address critical challenges in heavy-duty construction and structural steel applications. The hot-dipped galvanized coating provides superior protection against corrosion, extending service life in exposed environments like bridges, buildings, and industrial frameworks. With a tensile strength of 120,000 PSI and Rockwell C19 hardness, it withstands high loads and repetitive stress, reducing the risk of fastener failure. The partially threaded design and UNC coarse threads ensure efficient installation and reliable grip in structural connections, minimizing loosening from vibrations. Ideal for industrial construction screws, it meets rigorous standards for safety and performance, making it a trusted choice for engineers and contractors.
Specification Summary & Compliance
This screw features precise Class 2A thread fit and UNC coarse threading with a 3/4"-10 thread size, ensuring dimensional accuracy per ASME B18.2.6. It complies with ASTM A325 and ASTM F3125 specifications for structural bolts, and is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, affirming adherence to environmental and safety regulations.
