S-92979A241 5/16"-18 x 1/2" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for prolonged service life in demanding environments
• Superior load-bearing capacity with Grade 5 classification and 110,000 psi tensile strength for reliable performance under high stress
• Efficient installation and removal using standard external hex drive tools, reducing assembly time
• Optimized thread engagement with UNC coarse threading and Class 2A fit for quick, secure fastening in various materials
• Integrated flange design eliminates the need for separate washers, providing wider bearing surface and vibration resistance
• Full threading along the 1/2" length ensures maximum grip and adjustability in applications
• Compliance with industry standards including IFI 111/SAE J429, ensuring consistent quality and interchangeability

Professional Applications & Engineering Value

Engineered for industrial and construction applications, this Grade 5 zinc-plated steel hex head screw addresses critical needs for durability and reliability. The zinc plating provides a protective barrier against rust and corrosion, extending component life in harsh conditions. With a Rockwell C22 hardness and 110,000 psi tensile strength, it withstands heavy loads and vibrations in machinery, structural frames, and equipment assembly. The UNC coarse thread pattern and external hex drive facilitate rapid installation in metals, wood, and composite materials, reducing labor costs. The integrated flange distributes clamping force evenly, preventing surface damage and loosening. Ideal for automotive, manufacturing, and infrastructure projects requiring SAE J429-compliant fasteners with consistent performance.

Specification Summary & Compliance

This screw features precise Class 2A thread fit per UNC standards, ensuring proper engagement and interchangeability. Manufacturing adheres to IFI 111 SAE J429 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances and supporting environmental safety in industrial supply chains.