S-92316A333 3/8"-16 x 4 1/2" 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 reliable performance in high-stress applications
• Superior corrosion resistance through black phosphate steel coating that extends service life in demanding environments
• Enhanced installation efficiency with UNC coarse threads and Class 2A fit ensuring quick, secure fastening
• Increased stability and distribution from the integrated flange design that eliminates the need for separate washers
• Optimized grip and torque transmission through the external hex head design for secure mechanical fastening
• Precise thread engagement control with partially threaded shank design that prevents over-tightening
• Certified reliability meeting Grade 8 standards with Rockwell C32 hardness for consistent performance

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers critical engineering solutions for heavy machinery, structural assemblies, and industrial equipment where failure is not an option. The black-phosphate steel construction provides essential corrosion protection in environments exposed to moisture, chemicals, and outdoor elements, significantly reducing maintenance frequency and replacement costs. The UNC coarse thread pattern combined with Class 2A fit ensures rapid installation while maintaining vibration resistance in dynamic applications. The flanged design distributes clamping force over a wider surface area (13/16" diameter), preventing surface damage and maintaining joint integrity. With partial threading on a 4½" length, this fastener offers precise unthreaded shank sections for shear load management, making it ideal for construction, automotive, and manufacturing applications requiring high-strength bolting solutions.

Specification Summary & Compliance

This heavy-duty fastener features precise 3/8"-16 UNC coarse threads with Class 2A tolerance ensuring consistent fit and performance. Manufacturing complies with IFI 111 specifications meeting SAE J429 standards for Grade 8 fasteners. The product maintains full compliance with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations regarding substance restrictions, confirming its suitability for global industrial applications requiring certified components.