S-92323A112 1/4"-28 x 1 1/4" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength with 110,000 psi rating for reliable performance in demanding applications
• Superior corrosion resistance through zinc-plated steel construction, extending service life in harsh environments
• Secure anti-loosening performance with integrated serrations that maintain tight connections under vibration
• Enhanced bearing surface from the flanged design that distributes load and prevents surface damage
• Precision threading with UNF fine thread and Class 2A fit ensuring consistent, reliable engagement
• High torque capability through external hex drive design for easy installation and removal with standard tools
• Industry compliance meeting SAE J429 Grade 5 specifications for guaranteed mechanical properties

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 5 hex head screws deliver exceptional mechanical performance where vibration resistance and structural integrity are critical. The zinc-plated steel construction provides reliable corrosion protection for machinery, equipment assemblies, and structural frameworks exposed to demanding environments. The combination of UNF fine threading and fully threaded design ensures maximum engagement strength and precise adjustment capabilities. The integrated serrated locking feature beneath the hex head prevents rotational loosening in high-vibration applications, while the flanged design eliminates the need for separate washers, streamlining assembly processes. These industrial screws are particularly valuable in automotive, manufacturing, and construction applications where Grade 5 strength classification and consistent performance are mandatory requirements.

Specification Summary & Compliance

This 1/4"-28 hex head screw features Class 2A thread fit per UNF standards, ensuring precise dimensional accuracy and reliable mating with corresponding nuts and threaded components. Manufactured to meet IFI 111 specifications where identified as SAE J429 Grade 5, guaranteeing consistent mechanical properties including Rockwell C22 hardness and 110,000 psi tensile strength. The product is fully compliant with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations, including the latest SVHC updates as of June 14, 2023, ensuring safe use across global markets.