S-91251A847 3/4"-10 x 3" ASTM A574 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 thread precision with Class 3A fit provides secure, vibration-resistant connections, minimizing loosening in dynamic environments.
• Corrosion-resistant black-oxide finish on alloy steel enhances durability and longevity, even in harsh operating conditions.
• High hardness rating (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated assembly and disassembly.
• Partially threaded design with 2" minimum thread length allows for precise clamping force control and secure joint fastening.
• Coarse UNRC threads enable quick installation and are less prone to clogging in dirty or debris-filled environments.
• 5/8" hex drive and standard socket head profile facilitate easy installation with common tools, reducing assembly time and labor costs.

Professional Applications & Engineering Value

This 3/4"-10 Socket Head Cap Screw delivers critical engineering value in demanding applications where reliability is non-negotiable. The black-oxide alloy steel construction provides superior corrosion resistance, making it ideal for machinery, heavy equipment, and automotive assemblies exposed to moisture or chemicals. The Class 3A thread fit ensures tight tolerances for vibration-prone environments, preventing joint failure in dynamic systems. With its coarse UNRC threads, installation is faster and more efficient, particularly in field maintenance where speed is essential. The partially threaded configuration offers optimal clamping force distribution, solving common challenges of over-torquing and material stress in critical connections. These features combine to create a fastener that maintains integrity under extreme mechanical loads while complying with industry standards for safety and performance.

Specification Summary & Compliance

This socket head cap screw maintains precise dimensional accuracy with Class 3A thread fit and UNRC coarse thread specifications. Manufacturing follows ASTM A574 standards, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety requirements for industrial components.