S-90128A633 3/8"-16 x 2 1/4" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket Head Screws
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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 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Zinc-plated alloy steel construction provides excellent corrosion resistance, extending service life in demanding industrial environments.
- Class 3A thread fit offers superior precision and tighter tolerances for secure, vibration-resistant assemblies.
- Partially threaded design allows for effective clamping force concentration where needed, improving joint integrity.
- Hex socket drive (5/16") enables high-torque installation with standard tools, minimizing cam-out and enhancing installation efficiency.
- Coarse UNC threads facilitate quicker assembly and disassembly, saving time in maintenance and production cycles.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material consistency, environmental safety, and global regulatory acceptance.
Professional Applications & Engineering Value
These 3/8"-16 UNC Socket Head Cap Screws are engineered to address critical challenges in heavy-duty industrial settings, such as machinery assembly, automotive components, and structural frameworks. The zinc-plated alloy steel material combats corrosion and wear, while the Rockwell C37 hardness and 170,000 psi tensile strength provide durability under dynamic loads and vibrations. The partially threaded and coarse thread design ensures rapid, secure fastening in applications requiring high clamp force and resistance to loosening. By meeting ASTM A574 specifications, these screws deliver consistent performance, reducing downtime and maintenance costs in engineering projects.
Specification Summary & Compliance
This product features a Class 3A thread fit for precise engagement, UNC coarse threads with a size of 3/8"-16, and a minimum thread length of 1 1/4". It complies with ASTM A574 for material and manufacturing standards, ensuring high strength and reliability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, supporting environmental and safety regulations in global supply chains.
