S-92316A733 1/2"-13 x 5" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 psi ensures reliable performance in the most demanding heavy-duty applications
• Superior corrosion resistance provided by black-phosphate steel coating for extended service life in harsh environments
• Enhanced bearing surface with integrated flange distributes load evenly, reducing surface damage and improving joint integrity
• Precise Class 2A thread fit with UNC coarse threading enables faster assembly and reduced cross-threading risk
• Optimal partial threading design provides unthreaded shank for superior shear strength where needed
• Grade 8 certification guarantees consistent mechanical properties and Rockwell C32 hardness for maximum reliability
• External hex drive with 3/4" head width delivers excellent torque transmission and installation efficiency

Professional Applications & Engineering Value

These Grade 8 hex head screws are engineered to solve critical fastening challenges in heavy-duty industrial applications where failure is not an option. The black-phosphate steel construction provides superior corrosion protection without compromising the 150,000 psi tensile strength, making them ideal for structural steel connections, heavy machinery assembly, and construction equipment. The partially threaded design with UNC coarse threads ensures optimal clamping force distribution while the integrated flange eliminates the need for separate washers, streamlining installation in tight spaces. These industrial hex screws maintain integrity under extreme vibration and dynamic loading conditions, providing engineers with a reliable solution for critical joints that demand both high-strength performance and long-term durability in corrosive environments.

Specification Summary & Compliance

This 1/2"-13 UNC thread fastener features Class 2A thread fit tolerance for precise engagement and 5" overall length with 1 1/4" minimum thread length. Manufactured to meet IFI 111 specifications where identified as SAE J429 compliant, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting the latest environmental and safety standards for industrial use.