S-92865A262 5/8"-11 x 4 1/4" 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.
• Corrosion-resistant zinc plating extends service life by protecting against rust and environmental degradation in harsh conditions.
• Grade 5 steel construction with Rockwell C25 hardness provides superior durability and resistance to wear, ideal for repetitive or high-stress use.
• UNC coarse threading offers faster assembly and better grip in softer materials, improving installation efficiency.
• Partially threaded design allows for precise clamping force distribution, minimizing material damage and enhancing joint integrity.
• External hex drive and hex head enable easy installation with standard tools, reducing labor time and ensuring secure fastening.
• Compliance with industry standards like ASME B18.2.1 and SAE J429 guarantees consistent quality and interoperability in professional settings.

Professional Applications & Engineering Value

This 5/8"-11 UNC Grade 5 zinc plated steel hex head screw is engineered to address critical challenges in heavy-duty industrial and construction environments. Its high tensile strength and Rockwell C25 hardness make it suitable for structural applications where vibration and dynamic loads are common, such as machinery assembly, steel framing, and automotive components. The zinc plating provides a protective barrier against moisture and chemicals, reducing maintenance needs in outdoor or corrosive settings. With coarse UNC threading, it ensures quick, secure fastening in wood, metal, or composite materials, while the partially threaded shank helps prevent over-tightening and material splitting. Ideal for use with an external hex drive, this screw streamlines installation in confined spaces, boosting productivity for contractors and engineers seeking reliable, standards-compliant fasteners.

Specification Summary & Compliance

This fastener meets precise dimensional requirements, including a Class 2A thread fit for consistent engagement and a length of 4 1/4". It adheres to ASME B18.2.1 and SAE J429 standards for hex head screws, ensuring uniformity and safety. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, supporting environmental and health regulations in global supply chains.