S-91251A753 9/16"-12 x 1" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments
• Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress applications
• Precision Class 3A thread fit provides secure fastening with minimal vibration loosening
• Rockwell C37 hardness maintains structural integrity and prevents thread deformation
• Fully threaded design offers maximum grip length and uniform load distribution
• Hex socket drive enables high-torque installation in confined spaces
• Coarse UNC thread pattern facilitates quick assembly and disassembly operations

Professional Applications & Engineering Value

These black-oxide alloy steel socket head cap screws deliver critical performance advantages for heavy machinery, automotive assemblies, and industrial equipment where vibration resistance and structural integrity are paramount. The Class 3A thread fit combined with 170,000 psi tensile strength addresses common failure points in high-vibration environments, while the coarse UNC thread configuration ensures rapid installation in production settings. The black-oxide surface treatment provides essential corrosion protection without compromising dimensional accuracy, making these socket head screws ideal for precision engineering applications requiring both durability and exacting tolerances.

Specification Summary & Compliance

Manufactured to exacting Class 3A thread fit standards with UNC coarse thread profile (9/16"-12). Complies with ASTM A574 specification for alloy steel socket head cap screws. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features right-hand thread direction and standard socket head profile with 7/16" hex drive compatibility.