S-91274A408 7/16"-14 x 2 1/2" 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 under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from the zinc-flake coating protects against harsh industrial environments, extending service life and reducing maintenance needs.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, minimizing loosening in critical machinery.
• High hardness rating (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated use and installation.
• Standard hex socket drive (3/8") allows for easy installation with common tools, speeding up assembly while providing high torque capability.
• Partially threaded coarse UNC design enables quick alignment and secure fastening in a wide range of materials and applications.
• Full compliance with industry standards including ASME B18.3 and ASTM A574 guarantees consistent quality and interchangeability.

Professional Applications & Engineering Value

This 7/16"-14 UNC Socket Head Cap Screw delivers critical engineering value through its zinc-flake-coated alloy steel construction, specifically engineered to address common industrial challenges. The combination of 170,000 PSI tensile strength and Rockwell C37 hardness provides exceptional resistance to both static and dynamic loading, making it ideal for heavy machinery, automotive assemblies, and structural applications where vibration resistance is paramount. The coarse UNC thread with Class 3A fit ensures rapid installation while maintaining precise alignment in steel frames, equipment mounts, and precision instruments. The zinc-flake coating offers superior protection against corrosion in outdoor or chemically aggressive environments, significantly extending maintenance intervals and reducing lifecycle costs for industrial operations requiring durable socket head fasteners.

Specification Summary & Compliance

This socket head cap screw features precise Class 3A thread fit with UNC coarse thread specification (7/16"-14) and 2 1/2" length with minimum thread length of 1 3/8". Manufactured to ASME B18.3 and ASTM A574 specifications, ensuring dimensional accuracy and performance consistency. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry standards for safe and sustainable industrial components.