S-91274A416 7/16"-14 x 3" 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 industrial applications, reducing the risk of fastener failure.
• Superior corrosion resistance provided by the zinc-flake coating extends service life in harsh environments, minimizing maintenance and replacement costs.
• Precise Class 3A thread fit guarantees secure, vibration-resistant connections, enhancing assembly integrity and safety.
• High hardness rating (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated use and disassembly.
• Partially threaded design allows for controlled clamping force and easier alignment in precision assemblies.
• 3/8" hex drive compatibility enables efficient installation with standard tools, speeding up assembly processes.
• Compliance with major standards including ASME B18.3 and ASTM A574 ensures consistent quality and interoperability in regulated industries.

Professional Applications & Engineering Value

These Socket Head Cap Screws are engineered to address critical challenges in demanding industrial environments. The zinc-flake-coated alloy steel construction provides robust protection against corrosion, making these fasteners ideal for machinery, automotive, and outdoor equipment where exposure to moisture and chemicals is common. The 7/16"-14 UNC coarse thread and Class 3A thread fit deliver superior holding power and vibration resistance, preventing loosening in dynamic applications. With a 170,000 PSI tensile strength and Rockwell C37 hardness, they withstand extreme loads and repetitive stress, reducing downtime and maintenance. The partially threaded and right-hand thread design ensures precise engagement in complex assemblies, offering reliable fastening solutions for heavy-duty applications.

Specification Summary & Compliance

This Socket Head Cap Screw features a 3" length with a minimum thread length of 1-3/8", 7/16"-14 UNC coarse thread, and Class 3A thread fit for high precision. It complies with ASME B18.3 and ASTM A574 manufacturing specifications, and meets ASTM B117 for corrosion testing. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental and safety standards are upheld.