S-92865A257 1/2"-13 x 1 3/8" 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 under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance with zinc plating protects against rust and environmental damage, extending service life in industrial and outdoor settings.
• Coarse UNC threading provides faster installation and superior grip in a wide range of materials, minimizing cross-threading and improving assembly efficiency.
• Class 2A thread fit ensures consistent, precise engagement with nuts and tapped holes, reducing assembly time and improving joint integrity.
• Full threading along the 1 3/8" length allows for maximum adjustability and clamping force distribution, ideal for variable material thicknesses.
• External hex drive design enables high-torque application with common tools, facilitating quick and secure fastening in confined spaces.
• Rockwell C25 hardness provides excellent wear resistance and durability, maintaining fastener integrity through repeated use and vibration.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 5 hex head screw delivers critical performance where high tensile strength and corrosion resistance are paramount. The zinc plated steel construction combats oxidation in harsh environments, while the 1/2"-13 UNC coarse thread ensures rapid, secure fastening in structural assemblies, machinery, and equipment frames. Its fully threaded design accommodates varying material depths, providing consistent clamping force and reducing the need for multiple fastener types. Ideal for construction, automotive, and manufacturing sectors, this screw solves common issues like joint loosening under vibration and premature failure due to environmental exposure, ensuring long-term reliability and reduced maintenance costs.

Specification Summary & Compliance

This fastener features precision Class 2A thread fit and adheres to UNC coarse thread standards for consistent performance. Manufactured in compliance with ASME B18.2.1 and SAE J429 specifications, it guarantees dimensional accuracy and mechanical properties. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and safety regulations for industrial use worldwide.