S-91251A479 3/8"-24 x 4 3/4" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from the black-oxide finish on alloy steel extends service life in harsh industrial environments, minimizing maintenance needs.
• Precise Class 3A thread fit provides tighter tolerances for improved assembly accuracy and vibration resistance, enhancing joint integrity.
• Fine UNF threads offer increased engagement and superior holding power compared to coarse threads, ideal for applications requiring fine adjustments.
• Partially threaded design allows for controlled clamping force and reduced thread galling, facilitating easier disassembly and reuse.
• High hardness (Rockwell C37) ensures excellent wear resistance and durability, maintaining performance over repeated use cycles.
• Standard hex drive compatibility with 5/16" drive size enables efficient installation using common tools, speeding up assembly processes.

Professional Applications & Engineering Value

This 3/8"-24 UNF socket head cap screw is engineered to address critical challenges in heavy-duty industrial settings, such as machinery assembly, automotive systems, and precision equipment. The black-oxide alloy steel construction combats corrosion and wear, while the fine thread and Class 3A fit ensure secure fastening in high-vibration environments. Its partially threaded rod design concentrates clamping force effectively, preventing loosening and distributing stress evenly. With a tensile strength of 170,000 psi, it handles extreme loads without deformation, making it a reliable choice for applications demanding both mechanical robustness and compliance with industry standards like ASTM A574.

Specification Summary & Compliance

This socket head cap screw adheres to inch system measurements with a length of 4 3/4" and thread size of 3/8"-24 UNF. It features Class 3A thread fit for precision and is manufactured to meet ASTM A574 specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for global industrial use.