S-91247A738 1/2"-13 x 7" 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 high-stress industrial environments, reducing the risk of fastener failure.
• Zinc plating provides superior corrosion resistance, extending the screw's service life and maintaining integrity in harsh or outdoor conditions.
• Grade 5 steel construction with Rockwell C25 hardness offers excellent durability and wear resistance, ideal for repetitive or heavy-duty applications.
• Coarse UNC threading and Class 2A thread fit enable quick, secure installation and easy disassembly, minimizing assembly time and effort.
• Partially threaded design with a 1 1/2" minimum thread length allows for precise clamping force control and reduces the risk of thread stripping.
• External hex drive and 3/4" head width provide high torque capability and compatibility with standard tools, enhancing installation efficiency.
• Compliance with ASME B18.2.1, SAE J429, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations, supporting responsible sourcing.

Professional Applications & Engineering Value

This 1/2"-13 UNC Grade 5 hex head screw is engineered to address critical fastening challenges in demanding sectors like construction, machinery assembly, and automotive industries. The zinc plated steel finish combats corrosion, making it suitable for environments exposed to moisture or chemicals, while the coarse thread design resists loosening under vibration. With a 7" length and partial threading, it offers optimal grip for thick materials, preventing joint failure and ensuring long-term stability. Its 120,000 PSI tensile strength and Rockwell C25 hardness provide the robustness needed for heavy-duty applications, reducing maintenance costs and enhancing operational safety. By integrating these features, this screw delivers reliable performance in structural frameworks, equipment mounts, and other high-load scenarios.

Specification Summary & Compliance

This screw features precise Class 2A thread fit and UNC coarse threading with a 1/2"-13 thread size, ensuring consistent engagement and dimensional accuracy. It meets ASME B18.2.1 and SAE J429 Grade 5 specifications for mechanical properties and manufacturing standards. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility in industrial use.