S-91247A607 5/16"-18 x 6" 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 applications, reducing the risk of fastener failure.
• Zinc plating provides corrosion resistance, extending service life in various industrial environments and reducing maintenance needs.
• Grade 5 steel construction with Rockwell C25 hardness offers superior durability and resistance to wear, ideal for heavy-duty use.
• Coarse UNC threading and Class 2A thread fit enable quick assembly and secure fastening, minimizing installation time and improving efficiency.
• Partially threaded design with 6" length allows for precise clamping force control and versatility in diverse assembly scenarios.
• External hex drive and standard hex head facilitate easy installation with common tools, enhancing workflow productivity.
• Compliance with ASME B18.2.1, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations, providing peace of mind for quality-conscious buyers.

Professional Applications & Engineering Value

This Grade 5 hex head screw is engineered to address common industrial challenges, such as vibration loosening and corrosion-induced degradation. Made from high-strength steel with a zinc-plated finish, it resists environmental factors, making it suitable for outdoor machinery, construction frameworks, and automotive assemblies. The 5/16"-18 UNC coarse thread and Class 2A fit provide reliable engagement in materials like metal and wood, reducing the need for frequent retightening. Its partially threaded shank allows for controlled clamping, preventing joint damage in heavy-load applications. Ideal for industrial hex bolt uses, this screw ensures long-term reliability and compliance with ASME B18.2.1 standards, delivering consistent performance in demanding settings.

Specification Summary & Compliance

This screw features precise Class 2A thread fit and UNC coarse threading with a thread size of 5/16"-18, ensuring dimensional accuracy per ASME B18.2.1 and SAE J429 specifications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally sensitive applications. The manufacturing adheres to strict standards for tensile strength (120,000 psi) and hardness (Rockwell C25), guaranteeing performance in industrial fastening tasks.