S-92620A619 3/8"-16 x 1/2" 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 for reliable performance in high-stress applications
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in demanding environments
• Optimized thread engagement with Class 2A thread fit ensuring consistent, secure fastening across multiple installations
• Enhanced installation efficiency through external hex drive design that accommodates standard tools for quick assembly
• Maximum thread contact with fully threaded design that distributes stress evenly along the entire fastener length
• Consistent mechanical properties maintained through Rockwell C33 hardness for reliable performance under vibration and shock loads
• Industry-standard compatibility with UNC coarse threads that resist loosening in high-vibration applications

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver critical performance where failure is not an option. The combination of high-strength steel construction and zinc yellow-chromate plating addresses common industrial challenges including structural fatigue, environmental corrosion, and vibration-induced loosening. The 3/8"-16 UNC coarse thread configuration provides superior holding power in materials ranging from structural steel to heavy machinery components, while the external hex drive enables high-torque installation without stripping. These fasteners are particularly valuable in construction equipment, industrial machinery, and automotive assemblies where 150,000 psi tensile strength ensures joint integrity under extreme operational stresses.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent performance across applications. The UNC coarse thread profile and right-hand thread direction comply with industry-standard specifications. These hex head screws fully conform to ASME B18.2.1 and SAE J429 standards, ensuring dimensional accuracy and mechanical properties for Grade 8 fasteners. The inch system measurements (3/8"-16 thread size, 1/2" length) provide compatibility with North American industrial equipment and tooling requirements.