S-91274A468 1/2"-13 x 2 1/2" ASME B18.3, ASTM A574, ASTM B117 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc-flake coating, ensuring long-term reliability in harsh environments.
• Superior tensile strength of 170,000 PSI provides reliable performance under high-stress conditions.
• Precise Class 3A thread fit ensures secure, vibration-resistant fastening in critical assemblies.
• Coarse 1/2"-13 UNC threads enable quick installation and reduced cross-threading risks.
• Rockwell C37 hardness offers excellent wear resistance and durability for repeated use.
• 3/8" hex drive design allows for easy torque application with standard tools, improving assembly efficiency.
• Partially threaded shank provides optimal grip and alignment in varied material thicknesses.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this Socket Head Cap Screw combines zinc-flake-coated alloy steel with high tensile strength to resist corrosion and mechanical stress in machinery, automotive, and construction sectors. The coarse UNC threads and Class 3A fit minimize loosening from vibrations, while the hex drive ensures straightforward installation with common tools. Ideal for heavy-duty assemblies, it addresses common issues like fastener failure and maintenance downtime, providing a reliable solution for high-strength fastening in challenging environments.

Specification Summary & Compliance

This screw adheres to Class 3A thread fit and UNC coarse thread standards, with dimensions in the inch system including a 2 1/2" length and 1/2"-13 thread size. It meets ASME B18.3, ASTM A574, and ASTM B117 specifications for material and performance, and is compliant with RoHS 3 and REACH regulations, ensuring environmental safety and industry reliability.