S-91247A866 3/4"-10 x 10" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 120,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance through zinc plating, extending service life in harsh industrial environments
• Optimized thread engagement with UNC coarse threads and Class 2A fit ensuring secure fastening and vibration resistance
• Enhanced durability from Rockwell C25 hardness, maintaining structural integrity under repeated stress
• Efficient installation and removal with external hex drive and 1 1/8" head width for standard tool compatibility
• Versatile partial threading allowing both clamping and alignment functions in structural assemblies
• Regulatory compliance assurance meeting ASME B18.2.1, SAE J429, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

This Grade 5 hex head screw delivers critical engineering solutions for heavy machinery, structural steel connections, and industrial equipment assembly. The 3/4"-10 UNC coarse thread configuration provides superior pull-out resistance in metal-to-metal applications, while the zinc plated steel construction combats corrosion in manufacturing environments. The partially threaded design allows for both precise clamping force and structural alignment, making it ideal for construction projects requiring both shear strength and adjustability. With external hex drive compatibility, maintenance teams can achieve proper torque values using standard industrial tools, reducing installation time and ensuring consistent joint integrity across multiple connection points.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading standards, this fastener meets ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across global industrial markets. The combination of Rockwell C25 hardness and 120,000 psi tensile strength validates its classification as a Grade 5 industrial fastener suitable for critical structural applications.