S-92190A163 5/8"-11 x 2" ASME B18.2.1, SAE J429 Left-Hand Threaded Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 110,000 PSI provides reliable performance in high-stress applications
• Left-hand threading design offers secure fastening in applications where right-hand threads may loosen under rotational forces
• Fully threaded shank ensures maximum grip length and uniform load distribution along the entire fastener
• Grade 5 steel construction with Rockwell C21 hardness delivers superior durability and resistance to wear
• Coarse UNC threading enables faster installation and better performance in softer materials or debris-prone environments
• External hex drive design allows for high-torque installation with standard wrenching tools
• Class 2A thread fit provides optimal clearance for easy assembly while maintaining secure fastening integrity

Professional Applications & Engineering Value

This left-hand hex head screw is engineered to solve critical fastening challenges in demanding industrial environments. The Grade 5 steel construction combined with 110,000 PSI tensile strength makes it ideal for applications requiring exceptional load-bearing capacity and vibration resistance. The left-hand UNC coarse threading is particularly valuable in machinery and equipment where reverse rotation occurs, preventing unintended loosening of critical connections. The fully threaded design ensures maximum engagement in thick materials or when used with nuts, providing uniform stress distribution. These industrial fasteners are specifically designed for heavy-duty applications in construction, manufacturing, and automotive industries where reliability under extreme conditions is paramount.

Specification Summary & Compliance

This 5/8"-11 UNC hex head screw features precise Class 2A thread fit according to ASME standards, ensuring proper clearance and assembly compatibility. The fastener meets ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and restricted substance management. Manufactured in the inch system with exacting tolerances, this screw delivers consistent performance across industrial applications requiring reliable, high-strength fastening solutions.