S-91251A710 1/2"-13 x 3/4" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi for reliable performance in high-stress industrial applications.
• Superior corrosion resistance with black-oxide coating, extending service life in demanding environments.
• Precision Class 3A thread fit ensures secure, vibration-resistant fastening with minimal risk of loosening.
• Fully threaded design provides consistent clamping force along the entire 3/4" length for uniform load distribution.
• High hardness rating (Rockwell C37) reduces wear and deformation under heavy loads.
• Standard hex drive compatibility with 3/8" drive size for easy installation using common tools.
• Coarse UNC threads enable quick assembly and disassembly, reducing maintenance time.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial use, this socket head cap screw combines black-oxide alloy steel construction with a fully threaded UNC coarse thread profile to address critical fastening challenges. The Class 3A thread fit guarantees precise engagement, minimizing backlash in machinery, automotive assemblies, and structural frameworks. Its high tensile strength and hardness resist shear forces and fatigue, making it ideal for applications requiring repeated torque cycles. The hex drive socket allows for flush mounting in confined spaces, while the corrosion-resistant finish ensures longevity in humid or abrasive conditions, reducing replacement frequency and maintenance costs.

Specification Summary & Compliance

This screw features a 1/2"-13 UNC coarse thread with Class 3A precision tolerance for accurate fit. Manufactured to ASTM A574 specifications, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety and material integrity. Dimensions include a 3/4" length, 3/8" hex drive, and standard socket head profile for consistent performance across industrial applications.