S-94239A123 3/8"-16 x 1" IFI 111 High-Strength Grade 8 Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with Grade 8 strength rating and 150,000 psi tensile strength for critical heavy-duty applications
• Superior corrosion protection through zinc yellow-chromate plating that extends service life in harsh industrial environments
• Enhanced vibration resistance with serrated locking flange that prevents loosening under dynamic loads
• Optimized installation efficiency through UNC coarse threading and external hex drive for quick assembly and disassembly
• Reliable thread engagement with Class 2A fit and full threading along the entire 1" length for consistent clamping force
• Certified quality assurance meeting IFI 111 and SAE J429 specifications for guaranteed performance standards
• Robust structural integrity maintained through Rockwell C33 hardness for deformation resistance under extreme pressure

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver exceptional performance where vibration resistance and structural integrity are paramount. The zinc yellow-chromate plated steel construction provides superior corrosion protection in demanding environments, while the serrated locking flange eliminates the need for additional locking components by maintaining clamp load under extreme vibration. The UNC coarse thread configuration ensures rapid installation in structural steel, machinery assemblies, and equipment frames, with the external hex drive accommodating high torque applications. These fully threaded flange screws distribute stress evenly across the entire fastener length, preventing stress concentration points that can lead to premature failure in critical connections.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit for consistent engagement and UNC coarse thread spacing (3/8"-16). Complies with IFI 111 and SAE J429 specifications for Grade 8 fasteners, ensuring mechanical properties including 150,000 psi minimum tensile strength and Rockwell C33 hardness. The zinc yellow-chromate plating meets industry standards for corrosion resistance while maintaining compliance with RoHS and REACH environmental directives for industrial components.