S-94386A104 3/8"-16 x 3/4" IFI 111, SAE J429 Extra-Wide Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
• Superior load-bearing capacity with Grade 5 classification and 110,000 psi tensile strength for demanding applications
• Secure anti-loosening performance through serrated flange design that prevents rotation under vibration
• Quick installation efficiency with external hex drive and coarse UNC threading for faster assembly
• Precise thread engagement with Class 2A fit ensuring consistent mating with nuts and tapped holes
• Full-threaded versatility allowing installation along the entire shank length for adjustable positioning
• Regulatory compliance assurance meeting SAE J429, RoHS 3, and REACH standards for global industrial use

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 5 hex head screws deliver exceptional reliability where vibration resistance and structural integrity are critical. The zinc-plated steel construction provides essential corrosion protection for machinery, equipment frames, and structural assemblies exposed to environmental elements. The combination of coarse UNC threading and external hex drive enables rapid installation in time-sensitive production environments, while the serrated flange eliminates the need for separate lock washers by creating permanent friction against mating surfaces. With Rockwell C22 hardness and full threading along the 3/4" length, these fasteners maintain clamping force in high-vibration applications such as automotive assemblies, construction equipment, and industrial machinery where joint integrity cannot be compromised.

Specification Summary & Compliance

This 3/8"-16 hex head screw features Class 2A thread fit per UNC standards with coarse thread spacing for optimal engagement. Manufacturing complies with IFI 111 specifications where identified as SAE J429 for mechanical properties. The fastener meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations regarding SVHC (Substances of Very High Concern) as of June 14, 2023. Dimensions include 9/16" head width, 25/64" head height, and 59/64" flange diameter for standardized tool compatibility.