S-92979A110 1/4"-20 x 1/2" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
• Exceptional load-bearing capacity with Grade 5 rating and 110,000 psi tensile strength for demanding applications
• Enhanced stability and distribution through integrated flange design that eliminates need for separate washers
• Reliable fastening performance with Class 2A thread fit ensuring consistent engagement and vibration resistance
• Optimized installation efficiency with external hex drive and coarse UNC threads for quick assembly and disassembly
• Consistent material integrity maintained through Rockwell C22 hardness for durable thread formation
• Broad compatibility with standard 3/8" hex tools and right-hand threading for universal 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 are paramount. The zinc-plated steel construction provides essential corrosion protection for machinery, equipment assemblies, and structural frameworks exposed to demanding environmental conditions. The flanged design significantly improves load distribution while eliminating the complexity and cost of additional washers. With fully threaded 1/4"-20 UNC coarse threading and external hex drive, these fasteners ensure rapid installation and reliable clamping force in automotive, manufacturing, and construction applications where high tensile strength and durable thread engagement are non-negotiable requirements.

Specification Summary & Compliance

This 1/4"-20 x 1/2" hex head screw features Class 2A thread fit per UNC standards with coarse thread spacing for optimal performance. Manufactured to meet IFI 111 specifications where identified as SAE J429 for Grade 5 mechanical properties. Compliance verified with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring suitability for regulated industrial applications requiring documented material safety and restriction compliance.