S-91583A608 1/2"-13 x 4 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 coating, ideal for outdoor and harsh industrial environments.
- High tensile strength of 120,000 psi ensures reliable performance in structural and heavy-duty applications.
- Rockwell C19 hardness provides superior durability and resistance to wear and deformation.
- Coarse UNC thread design allows for faster installation and better grip in various materials.
- Class 2A thread fit offers consistent, precise threading for secure fastening and ease of assembly.
- Partially threaded shank with 3 1/2" grip length enables optimal clamping force in structural connections.
- Compliance with ASME, ASTM, RoHS, and REACH standards guarantees quality, safety, and environmental responsibility.
Professional Applications & Engineering Value
This Grade A325 hex head screw is engineered to address critical challenges in construction and industrial settings, such as structural steel connections, bridge building, and heavy machinery assembly. The hot-dipped galvanized steel material provides a robust barrier against rust and corrosion, extending service life in exposed conditions. With a 1/2"-13 UNC coarse thread and external hex drive, it ensures quick, secure installation and high resistance to vibration loosening. The partially threaded design concentrates clamping force where needed, reducing the risk of joint failure. Ideal for applications requiring high-strength fasteners that meet rigorous industry standards, this screw delivers reliability and efficiency in demanding environments.
Specification Summary & Compliance
This product features a 1/2"-13 UNC coarse thread with Class 2A fit for precise dimensional accuracy. It complies with ASME B18.2.6, ASTM A325, and ASTM F3125 specifications, ensuring consistent manufacturing quality. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.
