S-92979A475 1/2"-13 x 1 3/4" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 110,000 PSI tensile strength for reliable performance in demanding applications
• Superior corrosion resistance through zinc-plated steel construction, extending service life in harsh environments
• Optimized installation efficiency with external hex drive and standard 3/4" head width for secure tool engagement
• Enhanced vibration resistance through Class 2A thread fit and UNC coarse threading for superior holding power
• Reduced assembly complexity with integrated flange design eliminating the need for separate washers
• Consistent mechanical properties maintained through Rockwell C22 hardness and Grade 5 certification
• Full-thread engagement capability across the entire 1 3/4" length for maximum grip range

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 5 hex head screws deliver exceptional performance in construction, machinery assembly, and structural frameworks. The zinc-plated steel construction provides critical corrosion protection in environments where moisture and chemicals are present, while the UNC coarse threading ensures rapid installation and superior resistance to vibration loosening. The external hex drive design allows for high-torque application, making these fully threaded fasteners ideal for applications requiring consistent clamping force along the entire engagement length. The integrated flanged design distributes load evenly, preventing surface damage and reducing point stress concentrations in assembled components.

Specification Summary & Compliance

This 1/2"-13 hex head screw features Class 2A thread fit tolerance for precise engagement and meets SAE J429 specifications for Grade 5 fasteners. Manufacturing compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. The fastener maintains Rockwell C22 hardness and 110,000 PSI tensile strength throughout its 1 3/4" length, with right-hand thread direction and coarse thread spacing per UNC standards.