S-92979A130 1/4"-20 x 1 1/2" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc plating for extended service life in demanding industrial environments
• Superior load-bearing capacity with Grade 5 classification and 110,000 psi tensile strength for critical applications
• Reliable thread engagement with UNC coarse threading and Class 2A fit ensuring consistent fastening performance
• Increased stability and distribution through integrated flange design that eliminates the need for separate washers
• Optimized installation efficiency with external hex drive and standard 3/8" head width for common tool compatibility
• Reduced cross-threading risk with partial threading design that facilitates easier alignment and assembly
• Industry compliance assurance meeting SAE J429 specifications for consistent quality and performance standards

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel hex head screw delivers exceptional engineering value for industrial applications requiring reliable fastening solutions. The combination of 110,000 psi tensile strength and Rockwell C22 hardness ensures structural integrity under heavy loads, while the UNC coarse thread configuration provides superior resistance to vibration loosening in machinery and equipment assembly. The integrated flange design distributes clamping force evenly, preventing surface damage and reducing installation time by eliminating separate washers. Particularly valuable for industrial maintenance, automotive applications, and heavy equipment manufacturing, this partially threaded screw offers precise control over clamping depth while maintaining corrosion resistance through its zinc-plated finish, making it ideal for environments where moisture and chemical exposure are concerns.

Specification Summary & Compliance

This 1/4"-20 x 1-1/2" hex head screw features precise Class 2A thread fit tolerance with UNC coarse thread spacing and partial threading extending to a minimum of 3/4". Manufactured to IFI 111 specifications meeting SAE J429 standards for Grade 5 fasteners. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.