S-92979A138 1/4"-20 x 2" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 110,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance provided by zinc plating, extending service life in various industrial environments
• Easy installation and removal with external hex drive and 3/8" head width for standard wrench compatibility
• Enhanced stability and distribution through the flanged design, reducing the risk of surface damage
• Optimized thread engagement with UNC coarse thread pattern and Class 2A fit for quick assembly and vibration resistance
• Durable material construction meeting Grade 5 standards with Rockwell C22 hardness for consistent performance
• Compliance with major industry standards including IFI 111/SAE J429, RoHS 3, and REACH for quality assurance

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 5 hex head screws deliver reliable fastening solutions where vibration resistance and structural integrity are critical. The zinc-plated steel construction provides essential corrosion protection for machinery, equipment assemblies, and structural frameworks exposed to challenging environments. The UNC coarse thread pattern combined with partial threading offers superior holding power while facilitating quicker installation in production settings. The flanged design eliminates the need for separate washers, distributing clamp load effectively and preventing surface damage. These industrial fasteners are particularly valuable in automotive, construction, and manufacturing applications where 110,000 psi tensile strength and consistent performance under stress are mandatory requirements.

Specification Summary & Compliance

This 1/4"-20 x 2" hex head screw features Class 2A thread fit per UNC standards with precise dimensional accuracy. Manufacturing complies with IFI 111/SAE J429 specifications for Grade 5 fasteners, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for industrial components. Additional specifications include right-hand thread direction, 3/4" minimum thread length, and 9/16" flange diameter for optimal application performance.