S-92620A733 1/2"-13 x 8" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with Grade 8 steel construction providing 150,000 PSI tensile strength for critical structural applications
• Superior corrosion protection through zinc yellow-chromate plating that withstands harsh industrial environments
• Optimal thread engagement with Class 2A UNC coarse threads ensuring reliable fastening and vibration resistance
• Enhanced installation efficiency featuring external hex drive design for high-torque applications with standard tools
• Full-threaded design delivering consistent clamping force along the entire 8-inch length for uniform stress distribution
• Exceptional hardness rating of Rockwell C33 maintaining structural integrity under extreme mechanical stress
• Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for quality assurance

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 hex head screw addresses critical challenges in construction, machinery assembly, and structural fastening where failure is not an option. The 1/2"-13 UNC coarse threading provides superior resistance to vibration loosening while enabling quicker installation in thick materials. The zinc yellow-chromate plating creates a durable barrier against corrosion, extending service life in demanding environments. With fully threaded design and external hex drive, these screws deliver uniform clamping force and accommodate high-torque installation, making them ideal for critical connections in structural steel, heavy equipment, and industrial machinery where reliability and 150,000 PSI tensile strength are paramount.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (1/2"-13) ensuring proper engagement and interchangeability. Complies with ASME B18.2.1 dimensional standards and SAE J429 material specifications for Grade 8 fasteners. Features Rockwell C33 hardness and meets industry requirements for heavy-duty applications. The zinc yellow-chromate finish provides corrosion resistance while maintaining dimensional accuracy for reliable performance in industrial environments.