S-91274A404 7/16"-14 x 2 1/4" ASME B18.3, ASTM A574, ASTM B117 Alloy Steel Socket Head Screws

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.
• Superior corrosion resistance provided by the zinc-flake coating, extending service life in harsh industrial environments.
• High hardness rating of Rockwell C37 offers excellent wear resistance and maintains thread integrity under repeated use.
• Precision Class 3A thread fit guarantees tight, secure fastening with minimal backlash, ideal for critical assemblies.
• Hex socket drive design allows for high torque application and easy installation in confined spaces with standard tools.
• Coarse UNC thread enables quick assembly and disassembly, improving efficiency in maintenance and production lines.
• Compliance with ASME B18.3 and ASTM A574 ensures consistent quality and interoperability with existing industrial systems.

Professional Applications & Engineering Value

This 7/16"-14 UNC Socket Head Cap Screw is engineered from zinc-flake-coated alloy steel to address common industrial challenges such as vibration loosening, corrosion, and high mechanical stress. The partially threaded design provides optimal clamp load distribution, while the coarse thread and Class 3A fit ensure rapid, secure fastening in heavy machinery, automotive assemblies, and structural frameworks. Its hex drive and robust tensile strength make it suitable for applications requiring reliable, high-torque fasteners that withstand extreme conditions without compromising performance.

Specification Summary & Compliance

This screw features a Class 3A thread fit with UNC coarse threading, ensuring precise dimensional accuracy per ASME B18.3 and material standards per ASTM A574. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance, confirming its suitability for global industrial use without hazardous substances.