S-92316A222 3/8"-16 x 3 1/4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Maximum Load-Bearing Capacity - Grade 8 classification and 150,000 psi tensile strength ensure reliable performance in high-stress industrial applications
• Enhanced Corrosion Protection - Black-phosphate steel coating provides superior resistance to rust and environmental degradation
• Secure Fastening Performance - Class 3A thread fit delivers precise, vibration-resistant connections for critical assemblies
• Optimized Installation Efficiency - External hex drive and flanged design allow for quick installation and elimination of separate washers
• Versatile Thread Configuration - Partially threaded UNC coarse thread design provides both gripping power and adjustment flexibility
• Superior Mechanical Properties - Rockwell C32 hardness maintains structural integrity under repeated stress and heavy loads
• Regulatory Compliance Assurance - Meets SAE J429 specifications while being RoHS 3 and REACH compliant for global applications

Professional Applications & Engineering Value

This Grade 8 hex head screw with black-phosphate steel coating addresses critical engineering challenges in heavy machinery, construction equipment, and industrial assembly applications. The 3/8"-16 UNC coarse thread configuration combined with Class 3A thread fit ensures precise engagement and vibration resistance in high-stress environments. The partially threaded design provides concentrated clamping force where needed while allowing clearance in non-critical sections. The flanged head eliminates the need for separate washers, reducing assembly time and potential failure points. This heavy-duty fastener maintains its mechanical properties under extreme conditions, making it ideal for structural connections, equipment frames, and load-bearing assemblies where reliability is paramount.

Specification Summary & Compliance

This fastener features precision Class 3A thread fit with UNC coarse threading (3/8"-16) and meets SAE J429 specifications for Grade 8 requirements. Manufacturing complies with IFI 111 standards, ensuring dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, making it suitable for global industrial applications with strict environmental and safety requirements.