S-92865A597 5/16"-18 x 3 1/2" 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.
• Zinc plating provides superior corrosion resistance, extending service life in harsh industrial environments and minimizing maintenance needs.
• Grade 5 classification guarantees consistent hardness (Rockwell C25) for excellent wear resistance and durability under heavy loads.
• Coarse UNC threads and Class 2A fit enable quick installation and secure fastening, even in materials prone to stripping.
• Fully threaded design maximizes grip and holding power, distributing stress evenly for enhanced joint integrity.
• External hex drive and hex head allow for easy tightening with standard tools, improving assembly efficiency.
• Compliance with ASME, SAE, RoHS 3, and REACH standards ensures product reliability and environmental safety for global industrial use.

Professional Applications & Engineering Value

This Grade 5 hex head screw is engineered to address critical fastening challenges in heavy-duty industrial applications, such as machinery assembly, structural frameworks, and automotive components. The zinc plated steel construction combats corrosion, prolonging fastener life in exposed or humid conditions, while the coarse UNC thread and Class 2A fit reduce cross-threading risks and ensure stable connections in varied materials. With a fully threaded shank and external hex drive, it offers uniform clamping force and straightforward installation, minimizing downtime. Ideal for projects requiring high tensile strength and compliance with rigorous standards, this screw delivers dependable performance in construction, manufacturing, and equipment maintenance.

Specification Summary & Compliance

This fastener adheres to precise dimensional tolerances, including Class 2A thread fit and UNC coarse thread standards, ensuring compatibility and ease of use. It meets ASME B18.2.1 and SAE J429 specifications for Grade 5 bolts, confirming mechanical properties like tensile strength and hardness. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, supporting environmental and safety regulations in industrial supply chains.