S-90409A207 3/4"-10 x 5" 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 durability and wear resistance thanks to Rockwell C32 hardness Grade 8 steel construction
• Enhanced stability and vibration resistance from the integrated flange design that eliminates the need for separate washers
• Quick and secure installation with external hex drive compatibility for standard wrench tools
• Optimized thread engagement through Class 2A thread fit and UNC coarse threading for faster assembly
• Reduced material stress concentration with partial threading design that maintains shank strength
• Compliance with industry standards including IFI 111/SAE J429 and RoHS 3 for quality assurance

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical performance where structural integrity cannot be compromised. The 150,000 psi tensile strength and Rockwell C32 hardness make them ideal for heavy machinery, construction equipment, and industrial assemblies subjected to extreme loads and vibrations. The flange design provides distributed bearing surface, preventing surface damage while eliminating loose washers. With UNC coarse threading and Class 2A thread fit, these partially threaded screws offer superior resistance to loosening in high-vibration environments while maintaining unthreaded shank strength. The external hex drive ensures high torque application capability for secure fastening in confined spaces, making them essential for maintenance, manufacturing, and infrastructure projects requiring SAE J429 compliant fasteners.

Specification Summary & Compliance

This 3/4"-10 hex head screw features precise Class 2A thread fit tolerances with UNC coarse threading and right-hand thread direction. Manufactured to IFI 111 specifications meeting SAE J429 standards for Grade 8 fasteners. The product is fully RoHS 3 (2015/863/EU) compliant and demonstrates dimensional accuracy with 5" length, 1 19/32" flange diameter, and 1 3/4" minimum thread length. Material certification confirms Grade 8 steel composition with specified mechanical properties including 150,000 psi tensile strength and Rockwell C32 hardness.