S-90409A149 1/2"-13 x 1 1/2" 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 steel construction with 150,000 psi tensile strength ensures reliable performance in high-stress industrial environments.
• Superior Durability and Wear Resistance: Rockwell C32 hardness provides excellent resistance to deformation and extends service life under repetitive loads.
• Secure Flange Design: Integrated flange eliminates the need for a separate washer, distributing clamping force evenly and preventing surface damage.
• Optimized Thread Engagement: Class 2A thread fit and coarse UNC threading enable quick assembly and reduce the risk of cross-threading in demanding applications.
• Robust External Hex Drive: 3/4" head width offers high torque capability for secure tightening with standard tools, minimizing slippage.
• Partial Threading for Precision Fastening: Allows unthreaded shank to bear shear loads effectively, ideal for components requiring precise clamping.
• Compliant with Industry Standards: Meets IFI 111/SAE J429 specifications and environmental regulations like RoHS 3 and REACH for safe, global use.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 hex head screw addresses critical challenges in machinery assembly, construction, and automotive sectors. The flanged design simplifies installation by integrating a washer-like base, reducing part count and assembly time while providing superior vibration resistance. Made from high-strength steel with a Rockwell C32 hardness, it withstands extreme tensile and shear forces, preventing failure in dynamic environments. The 1/2"-13 UNC coarse thread and Class 2A fit ensure reliable engagement in materials prone to debris, while partial threading optimizes load distribution. Ideal for securing structural components, this SAE J429 compliant fastener delivers long-term reliability in harsh conditions, from manufacturing equipment to infrastructure projects.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and UNC coarse threading per inch-based measurements. It complies with IFI 111/SAE J429 specifications for mechanical properties and is verified to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safety and sustainability in industrial supply chains.