S-92316A636 3/8"-16 x 2 3/4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Load-Bearing Capacity – Grade 8 classification and 150,000 psi tensile strength ensure reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior Corrosion Resistance – Black phosphate steel coating provides enhanced protection against rust and wear, extending service life in harsh industrial environments.
• Optimized Thread Engagement – Class 2A thread fit and UNC coarse threading offer easier assembly and improved vibration resistance, minimizing loosening over time.
• Enhanced Torque Application – External hex drive and flanged design distribute clamping force evenly, allowing for secure installations with standard tools.
• Durable Material Hardness – Rockwell C32 hardness ensures the screw maintains its structural integrity under repeated mechanical stress.
• Versatile Fastening Solution – Partially threaded shank and 2 3/4" length provide flexibility for applications requiring precise grip range and flange stability.
• Regulatory Compliance Assurance – Meets SAE J429, RoHS 3, and REACH standards, ensuring safety and environmental responsibility in global supply chains.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this Grade 8 hex head screw combines black phosphate steel construction with a UNC coarse thread to address common challenges like vibration-induced loosening and corrosion. The partially threaded design and external hex drive facilitate quick, secure fastening in heavy machinery, automotive assemblies, and structural frameworks, where 150,000 psi tensile strength is critical for load distribution. Its flanged feature eliminates the need for separate washers, streamlining installation while maintaining consistent pressure. Ideal for right-hand thread applications requiring Class 2A precision, this screw ensures long-term reliability in environments exposed to dynamic stresses and moisture.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit tolerances and UNC coarse thread spacing per SAE J429 specifications, with a minimum thread length of 1" and overall length of 2 3/4". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances. Manufacturing follows IFI 111 standards for Grade 8 mechanical properties, including Rockwell C32 hardness and 150,000 psi tensile strength, ensuring consistent quality for industrial use.