S-90602A232 1/2"-13 x 1 1/4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity 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
• Precision thread engagement with Class 3A thread fit ensuring secure fastening and vibration resistance
• Enhanced driving efficiency through external hex drive design allowing for high torque application
• Increased bearing surface area from the integrated flange, distributing load evenly and preventing surface damage
• Optimal hardness characteristics with Rockwell C32 rating maintaining structural integrity under heavy loads
• Full thread coverage along the 1 1/4" length providing maximum grip strength throughout the fastened joint

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 hex head screw delivers exceptional performance where failure is not an option. The combination of zinc yellow-chromate plated steel construction and UNC coarse threading provides superior corrosion resistance and rapid installation in challenging environments. The fully threaded design ensures maximum engagement strength across the entire fastener length, while the integrated flange eliminates the need for separate washers, reducing assembly time and component count. These industrial hex screws are particularly valuable in construction equipment, automotive assemblies, and machinery where high tensile strength and vibration resistance are critical to operational safety and longevity.

Specification Summary & Compliance

This 1/2"-13 hex head screw features precision UNC coarse threads with Class 3A thread fit tolerance for optimal engagement. Manufactured to meet IFI 111 specifications where identified as SAE J429 standard for Grade 8 fasteners. The product maintains dimensional accuracy with 1 1/4" length, 3/4" head width, and 1 1/16" flange diameter. Compliant with industry standards for heavy-duty fastening applications requiring verified mechanical properties and performance characteristics.