S-92323A548 5/16"-18 x 3" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Serrated-Flange 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 thanks to zinc-plated steel construction, extending service life in harsh environments
• Enhanced installation stability through flange design with serrations that prevent loosening under vibration
• Optimized torque transmission with external hex drive and full-height hex head for secure tool engagement
• Precision threading compatibility featuring UNC coarse Class 2A threads for quick assembly and consistent fit
• Certified material integrity with Rockwell C22 hardness ensuring dimensional stability under stress
• Regulatory compliance assurance meeting SAE J429, RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 5 hex head screws deliver critical performance where vibration resistance and structural integrity matter most. The zinc-plated steel construction provides essential corrosion protection for machinery, equipment frames, and structural assemblies exposed to environmental elements. The combination of fully threaded UNC coarse pattern and Class 2A thread fit ensures rapid installation while maintaining precise tolerances. The flange design with serrations creates permanent locking action that eliminates the need for separate washers and prevents joint failure in high-vibration environments. These industrial fasteners are particularly valuable in construction equipment, automotive assemblies, and manufacturing machinery where 110,000 psi tensile strength provides essential safety margins for critical connections.

Specification Summary & Compliance

Manufactured to IFI 111 specifications meeting SAE J429 Grade 5 requirements with Class 2A thread fit for consistent assembly performance. The UNC coarse thread pattern (5/16"-18) provides optimal engagement in various materials. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures global acceptability. Dimensional accuracy maintained with 3" length, 1/2" head width, and 11/16" flange diameter for standardized installation across industrial applications.