S-92316A345 1/2"-20 x 1" 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 for demanding industrial applications
• Superior corrosion resistance from black-phosphate steel coating, extending service life in harsh environments
• Precise thread engagement with UNF fine pitch and Class 2A fit for vibration-resistant connections
• High-strength Grade 8 classification (Rockwell C32 hardness) ensuring reliability under extreme mechanical stress
• Integrated flange design eliminates need for separate washers, simplifying installation and improving load distribution
• Full threading along 1" length provides maximum grip and adjustability in assembled components
• External hex drive compatibility with standard 3/4" wrench for secure installation and removal

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers critical performance where vibration resistance and structural integrity are paramount. The black-phosphate steel coating provides superior corrosion protection without compromising the 150,000 PSI tensile strength, making it ideal for heavy machinery, construction equipment, and automotive assemblies. The UNF fine thread configuration maintains clamping force under dynamic loads, while the flanged design distributes pressure evenly across joined surfaces. Engineered to SAE J429 specifications, these screws prevent joint failure in high-stress applications where standard fasteners would compromise safety and durability.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with 1/2"-20 UNF fine thread and 1" length. Complies with SAE J429 (IFI 111) mechanical properties for Grade 8 fasteners. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. Features external hex drive (3/4" head width) and right-hand threading for standard installation procedures.