S-90602A244 1/4"-20 x 3" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 psi ensures reliable performance in the most demanding heavy-duty applications
• Superior corrosion resistance provided by zinc yellow-chromate plating extends service life in harsh industrial environments
• Grade 8 certification guarantees consistent high-strength performance meeting rigorous SAE J429 standards
• Flanged hex head design eliminates the need for separate washers while providing superior load distribution
• UNC coarse threading with Class 2A fit enables quick assembly and reliable fastening in various materials
• Partially threaded shank allows for precise clamping force control and prevents thread damage during installation
• External hex drive provides excellent torque transmission and prevents stripping during high-torque applications

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver exceptional performance where failure is not an option. The zinc yellow-chromate plated steel construction provides superior corrosion resistance, making them ideal for outdoor equipment, machinery, and structural applications exposed to harsh environments. The flanged design eliminates washer requirements while distributing clamp load effectively, reducing installation time and preventing surface damage. With UNC coarse threading and Class 2A thread fit, these screws offer quick assembly in various materials while maintaining precise tolerances. The partially threaded configuration ensures optimal clamping force and prevents thread damage in high-vibration environments, making them perfect for automotive, construction, and manufacturing applications requiring reliable fastening solutions.

Specification Summary & Compliance

This 1/4"-20 hex head screw features UNC coarse threading with Class 2A thread fit for precise dimensional accuracy. Manufactured to meet IFI 111 specifications where applicable to SAE J429 standards, ensuring consistent quality and performance. The fastener complies with industry standards for Grade 8 strength classification, providing 150,000 psi tensile strength and Rockwell C32 hardness. The zinc yellow-chromate plating meets corrosion resistance requirements while the 3" length and 9/16" flange diameter provide optimal fastening capabilities for industrial applications.