S-92979A336 3/8"-16 x 5/8" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel coating, extending service life in harsh industrial environments
• Exceptional load-bearing capacity with 110,000 psi tensile strength, ensuring reliable performance under high-stress conditions
• Enhanced driving efficiency through external hex drive design, allowing for quick installation with standard tools
• Improved stability and distribution thanks to the flanged head design, reducing the risk of surface damage and loosening
• Precise thread engagement with UNC coarse threads and Class 2A fit, providing consistent fastening in various materials
• High durability backed by Rockwell C22 hardness, maintaining structural integrity through repeated use
• Regulatory compliance assurance meeting SAE J429, RoHS 3, and REACH standards for safe, sustainable applications

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this Grade 5 zinc-plated steel hex head screw addresses critical challenges in assembly and maintenance. The fully threaded UNC coarse thread design ensures maximum grip and vibration resistance, preventing joint failure in machinery, structural frameworks, and heavy equipment. The external hex drive facilitates high-torque application with common wrenches, streamlining installation in confined spaces. Combined with a flanged head that distributes clamping force evenly, it minimizes surface indentation and enhances seal integrity. Ideal for automotive, construction, and manufacturing sectors, this fastener delivers consistent performance where corrosion resistance and high tensile strength are non-negotiable.

Specification Summary & Compliance

This screw maintains precise Class 2A thread fit per UNC standards, ensuring dimensional accuracy for reliable mating. Manufactured in compliance with IFI 111 / SAE J429 specifications, it guarantees consistent mechanical properties. The product is verified to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial use without hazardous substances.