S-92316A772 1/2"-20 x 2 3/4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Grade 8 classification and 150,000 PSI tensile strength for reliable performance in demanding applications
• Superior corrosion resistance thanks to black-phosphate steel coating, extending service life in harsh industrial environments
• Optimized thread engagement with UNF fine thread design and Class 2A fit ensuring vibration resistance and precise assembly
• Enhanced installation efficiency through external hex drive and flanged design providing superior grip and eliminating washer requirements
• Controlled thread distribution with partial threading allowing precise clamping force concentration where needed
• Heavy-duty construction featuring Rockwell C32 hardness for maximum durability against wear and deformation
• Industry-standard compliance meeting SAE J429 specifications for guaranteed mechanical properties and performance

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 hex head screw delivers critical performance where high tensile strength and corrosion resistance are paramount. The black-phosphate steel coating provides superior protection against rust and chemical exposure in manufacturing, construction, and machinery assembly environments. Its UNF fine thread configuration ensures maximum thread engagement and vibration resistance in dynamic load conditions, while the partially threaded design concentrates clamping force precisely where needed. The external hex drive and integrated flange facilitate quick installation and even pressure distribution, making it ideal for structural connections, equipment mounting, and high-stress assemblies requiring 150,000 PSI tensile strength and long-term reliability.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerance per UNF standards with precise 1/2"-20 thread size and 2 3/4" length. Manufacturing complies with SAE J429 specifications (IFI 111) for Grade 8 mechanical properties, ensuring consistent Rockwell C32 hardness and dimensional accuracy. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety regulations for industrial components.