S-91251A759 9/16"-12 x 2" ASTM A574 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.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in demanding industrial environments.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies in critical applications.
• Hex socket drive design allows for high torque application and easy installation in confined spaces with standard tools.
• Fully threaded body offers consistent clamping force along the entire 2" length, enhancing joint integrity.
• Coarse UNC threads enable quicker assembly and better performance in materials prone to stripping or cross-threading.
• Compliance with ASTM A574, RoHS 3, and REACH ensures material consistency and environmental safety for global supply chains.

Professional Applications & Engineering Value

Engineered for high-stress industrial applications, this Black-Oxide Alloy Steel Socket Head Cap Screw addresses common challenges like vibration loosening and corrosion. The 9/16"-12 UNC coarse thread with Class 3A fit ensures precise engagement in metals and composites, minimizing assembly errors. Its hex drive and fully threaded design provide uniform load distribution, ideal for machinery, automotive, and heavy equipment where high tensile strength and durability are critical. The black-oxide surface treatment adds a protective layer, reducing maintenance needs in harsh environments while meeting strict industry standards.

Specification Summary & Compliance

This screw adheres to Class 3A thread tolerances per UNC standards, with a 2" length and fully threaded rod type. Manufactured to ASTM A574 specifications, it ensures consistent mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), supporting safe and sustainable industrial use.