S-90409A132 3/8"-16 x 1" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Maximum Load Capacity – Grade 8 classification and 150,000 psi tensile strength provide exceptional resistance to heavy loads and structural stress.
• Superior Durability – Rockwell C32 hardness ensures excellent wear resistance and longevity in demanding industrial environments.
• Enhanced Grip & Stability – Flanged design increases bearing surface, reducing the risk of loosening under vibration and improving joint integrity.
• Efficient Installation – External hex drive and coarse 3/8"-16 UNC thread enable quick assembly and high clamping force with standard tools.
• Precise Thread Fit – Class 2A thread tolerance ensures consistent engagement and reliable performance in a wide range of applications.
• Full Thread Engagement – Fully threaded shank offers uniform stress distribution and maximum holding power along the entire length.
• Regulatory Compliance – Meets IFI 111/SAE J429 standards and is RoHS 3 & REACH compliant for safe, regulated use in various industries.

Professional Applications & Engineering Value

This Grade 8 steel hex head screw is engineered for heavy machinery, construction equipment, and automotive assemblies where high tensile strength and vibration resistance are critical. The coarse UNC thread and external hex drive facilitate rapid installation and disassembly, reducing labor time in maintenance and production lines. The flanged screw design eliminates the need for separate washers, providing a larger bearing surface that distributes load effectively and prevents surface damage. With a Rockwell C32 hardness and full threading, it maintains integrity under dynamic loads, making it ideal for structural frames, engine components, and industrial fastening systems requiring dependable, long-term performance.

Specification Summary & Compliance

This 3/8"-16 UNC hex head screw features a Class 2A thread fit for consistent assembly and meets IFI 111 / SAE J429 specifications. It is manufactured from high-strength steel, with a 1" length, 9/16" head width, and 13/16" flange diameter. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of restricted substances and suitable for global industrial supply chains.