S-92316A225 3/8"-24 x 1 1/4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Maximum Load-Bearing Capability – With a tensile strength of 150,000 PSI and Rockwell C32 hardness, this screw withstands extreme mechanical stress, reducing the risk of failure in critical assemblies.
• Superior Corrosion Resistance – The black-phosphate steel finish provides a durable barrier against rust and environmental degradation, extending service life in harsh industrial settings.
• Precise, Secure Fastening – Class 3A thread fit and UNF fine thread design ensure tight, vibration-resistant connections, minimizing loosening in high-stress applications.
• Enhanced Stability with Flange – The integrated 13/16" flange distributes clamping force evenly, eliminating the need for separate washers and speeding up installation.
• High-Strength Material Compliance – Manufactured to Grade 8 standards (SAE J429), guaranteeing consistent performance and reliability in demanding engineering projects.
• Full Thread Engagement – Fully threaded design allows for maximum grip along the entire length, providing uniform load distribution and improved joint integrity.
• Regulatory Safety Assurance – Compliant with RoHS 3 and REACH, ensuring the screw is free from hazardous substances and safe for global industrial use.

Professional Applications & Engineering Value

Engineered for heavy-duty applications, this Grade 8 hex head screw delivers exceptional performance in industries such as automotive, machinery, and structural fabrication. The black-phosphate steel construction offers enhanced corrosion resistance, crucial for outdoor or humid environments where oxidation can compromise fastener integrity. Its UNF fine thread and Class 3A fit provide superior resistance to vibration loosening, a common issue in dynamic systems. The flanged head design simplifies assembly by integrating a washer-like function, reducing part count and installation time. Ideal for high-stress connections requiring 150,000 PSI tensile strength, this screw ensures long-term reliability in demanding settings like engine mounts, heavy equipment, and construction frameworks.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and UNF fine thread (3/8"-24) specifications. It meets SAE J429 for Grade 8 mechanical properties, ensuring consistent strength and hardness (Rockwell C32). Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it is verified free of restricted substances, supporting safe and sustainable industrial use.