S-91251A119 7/16"-14 x 5" 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 extends service life in harsh industrial environments, minimizing maintenance and replacement costs.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, enhancing joint integrity and safety.
• High Rockwell C37 hardness offers excellent wear resistance, maintaining thread form and drive integrity through repeated use and high torque applications.
• Hex socket drive design allows for high torque application and easy installation in confined spaces, improving assembly efficiency and reducing labor time.
• Coarse UNC threading enables quick assembly and disassembly, while the partially threaded design provides optimal grip and clamping force distribution.
• Full compliance with ASTM A574 and environmental regulations ensures consistent quality and reliability for industrial and engineering applications.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these black-oxide alloy steel socket head cap screws deliver exceptional performance where reliability is critical. The combination of 170,000 psi tensile strength and Rockwell C37 hardness makes them ideal for high-stress environments such as machinery assembly, automotive systems, and construction equipment. The 7/16"-14 UNC coarse thread with Class 3A fit ensures secure fastening in materials where vibration resistance is essential, while the black-oxide surface treatment provides reliable corrosion protection without compromising dimensional accuracy. These socket head cap screws solve common engineering challenges by offering consistent performance in applications requiring both high strength and corrosion resistance, supported by hex drive compatibility for efficient installation in space-constrained areas.

Specification Summary & Compliance

This 5" length socket head cap screw features 7/16"-14 UNC coarse threads with Class 3A thread fit for precision assembly. Manufactured to ASTM A574 specifications, it ensures consistent mechanical properties and dimensional accuracy. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting environmental and safety standards for industrial use worldwide.