S-90602A251 7/16"-14 x 1 1/4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with Grade 8 classification, 150,000 psi tensile strength, and Rockwell C32 hardness for reliable performance in demanding environments.
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life and reducing maintenance in harsh industrial settings.
• Enhanced load distribution and stability due to the integrated flange, minimizing the need for separate washers and preventing surface damage.
• Optimized for high-vibration applications featuring a coarse UNC thread and Class 2A fit, ensuring secure fastening and easy installation.
• Versatile partial threading design allows for precise clamping force control, ideal for components requiring specific unthreaded shank sections.
• Compliance with rigorous industry standards including IFI 111 and SAE J429, guaranteeing consistent quality and interchangeability.
• Efficient external hex drive enables quick installation and removal with standard tools, boosting productivity in assembly lines.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 hex head screw addresses critical challenges in machinery, construction, and automotive sectors where high tensile strength and vibration resistance are paramount. The zinc yellow-chromate plated steel construction combats rust and corrosion, significantly prolonging fastener life in outdoor or chemically aggressive environments. Its partially threaded and flanged design ensures uniform stress distribution and reduces loosening under dynamic loads, while the coarse UNC thread facilitates faster assembly and reliable holding power. By meeting IFI 111/SAE J429 specifications, it provides a trusted solution for structural fastening, equipment manufacturing, and maintenance operations requiring Class 2A thread fit precision and dependable performance.

Specification Summary & Compliance

This fastener adheres to Class 2A thread fit tolerances for consistent engagement and is manufactured in accordance with IFI 111 and SAE J429 standards. It features a 7/16"-14 UNC coarse thread, 1 1/4" length, and 15/16" flange diameter, ensuring dimensional accuracy and compatibility. The zinc yellow-chromate plating on steel meets common industry requirements for corrosion protection, and the product complies with relevant regulations such as RoHS and REACH for environmental safety.