S-92620A650 3/8"-24 x 2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 150,000 psi tensile strength and Grade 8 classification for reliable performance in high-stress environments
• Superior corrosion resistance through zinc yellow-chromate plating that protects against rust and extends service life in harsh conditions
• Precise thread engagement with UNF fine threading and Class 2A fit ensuring secure fastening and vibration resistance
• Optimized torque transmission via external hex drive design that prevents tool slippage during installation
• Enhanced durability with Rockwell C33 hardness providing excellent wear resistance and structural integrity
• Full threading coverage along the 2" length for maximum grip strength and uniform stress distribution
• Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed interchangeability

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these Grade 8 steel hex head screws deliver exceptional performance where failure is not an option. The combination of UNF fine threading and Class 2A thread fit provides superior resistance to vibrational loosening in machinery, automotive assemblies, and structural frameworks. The zinc yellow-chromate plating creates a protective barrier against corrosive elements in outdoor or chemically aggressive environments, significantly extending maintenance intervals. With fully threaded design and external hex drive, these fasteners ensure maximum clamping force distribution and efficient installation using standard tools. The high tensile strength and Rockwell C33 hardness make them ideal for critical connections in construction equipment, heavy machinery, and aerospace components where reliability is paramount.

Specification Summary & Compliance

This 3/8"-24 x 2" hex head screw features precision UNF fine threading with Class 2A thread fit tolerances for consistent engagement. Manufactured to ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical properties. The inch system measurement provides compatibility with North American equipment and standards. Complies with industry regulations for heavy-duty fastening applications, with right-hand thread direction and external hex drive conforming to established engineering practices.