S-91247A746 1/2"-13 x 10" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure
• Superior corrosion resistance with zinc plating extends service life in harsh industrial environments, minimizing maintenance requirements
• Precision Class 2A thread fit provides consistent engagement and reliable clamping force for secure assemblies
• Grade 5 steel construction with Rockwell C25 hardness offers optimal balance of strength and durability for heavy-duty applications
• External hex drive design enables easy installation and removal with standard tools, improving assembly efficiency
• Coarse UNC threading ensures quick assembly and reduced cross-threading risks in industrial settings
• Partial threading configuration provides optimal grip length while maintaining unthreaded shank strength where needed

Professional Applications & Engineering Value

This Grade 5 hex head screw delivers critical engineering value through its heavy-duty steel construction and zinc plating surface treatment, specifically designed to address industrial fastening challenges. The 1/2"-13 UNC coarse thread configuration ensures rapid installation in structural applications, construction projects, and machinery assembly where vibration resistance and reliable clamping force are paramount. The partially threaded design provides enhanced shear strength in the unthreaded portion while maintaining secure thread engagement. With external hex drive compatibility, these screws integrate seamlessly into existing industrial maintenance protocols, reducing installation time and improving workflow efficiency in manufacturing plants, equipment repair facilities, and infrastructure projects where inch system fasteners are standard.

Specification Summary & Compliance

This 10" hex head screw features precise Class 2A thread fit tolerances and 1/2"-13 UNC coarse threading manufactured to exacting standards. The fastener meets ASME B18.2.1 and SAE J429 Grade 5 specifications, ensuring dimensional accuracy and mechanical properties. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and material safety for global industrial applications.