S-94386A103 5/16"-18 x 1" IFI 111, SAE J429 Extra-Wide Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 110,000 PSI for reliable performance in demanding industrial applications
• Superior corrosion resistance with zinc-plated steel coating, extending service life in harsh environments
• Maximum torque application through external hex drive design, ensuring secure fastening and easy installation
• Enhanced vibration resistance with serrated locking flange, maintaining joint integrity under dynamic loads
• Precise thread engagement with Class 2A UNC coarse threads, providing consistent clamping force and reducing cross-threading risks
• Full threading capability along the 1" length, offering versatile fastening solutions across various material thicknesses
• Industry-standard compliance with SAE J429, RoHS 3, and REACH, ensuring quality and environmental responsibility

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel hex head screw delivers critical engineering solutions for industrial assembly challenges. The combination of 110,000 PSI tensile strength and Rockwell C22 hardness provides exceptional load-bearing capacity in construction equipment, machinery frames, and structural applications where joint integrity is paramount. The UNC coarse thread pattern ensures rapid installation and reliable performance in softer materials or where vibration resistance is crucial. The zinc plating offers superior corrosion protection for outdoor applications or environments with moisture exposure, while the external hex drive accommodates high-torque applications without stripping. The integrated flange with serrations eliminates the need for separate washers while providing enhanced locking capability against loosening under dynamic loads.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit for consistent performance. The UNC coarse thread (5/16"-18) follows established industrial specifications with 1" length and fully threaded design. Complies with IFI 111/SAE J429 specifications for Grade 5 fasteners, ensuring mechanical properties and dimensional accuracy. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards for restricted substances, making them suitable for global industrial supply chains.