S-92316A774 1/2"-20 x 3" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 150,000 PSI tensile strength and Rockwell C32 hardness for reliable performance in high-stress applications
• Enhanced corrosion resistance through black-phosphate steel coating, extending service life in demanding industrial environments
• Superior thread engagement with UNF fine threading and Class 2A fit ensuring precise installation and vibration resistance
• Integrated flange design eliminates need for separate washers, providing wider bearing surface and simplified assembly
• Optimized for heavy-duty applications with Grade 8 certification meeting rigorous SAE J429 standards for industrial reliability
• Secure external hex drive allows for high-torque installation using standard tools without stripping concerns
• Partial threading configuration provides unthreaded shank section for enhanced shear strength in structural connections

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 hex head screw delivers exceptional performance in machinery assembly, structural steel connections, and equipment manufacturing. The black-phosphate steel coating provides superior corrosion protection without compromising the 150,000 PSI tensile strength, making it ideal for environments where both durability and corrosion resistance are critical. The UNF fine threading ensures precise thread engagement in tapped holes, while the integrated flange distributes clamping force effectively, preventing surface damage and maintaining joint integrity. This partially threaded design offers optimal performance where shear strength is paramount, with the unthreaded shank resisting lateral forces in structural applications. The external hex drive accommodates high installation torque requirements common in industrial maintenance and manufacturing operations.

Specification Summary & Compliance

This 1/2"-20 UNF fine thread hex head screw features Class 2A thread fit tolerances for precise engagement and meets IFI 111 specifications and SAE J429 standards for Grade 8 fasteners. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, ensuring environmental responsibility while delivering industrial-grade performance with 3" length and 1 5/64" flange diameter for optimal application versatility.