S-92979A487 1/2"-13 x 2 1/2" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 110,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Corrosion-resistant zinc plating on steel provides durable protection against rust, extending service life in harsh industrial environments.
• Grade 5 classification guarantees consistent mechanical properties and load-bearing capacity for demanding assembly tasks.
• Flanged hex head design eliminates the need for a separate washer, simplifying installation and providing a larger bearing surface for improved joint stability.
• UNC coarse threading allows for quicker assembly and better performance in materials where fine threads might strip or cross-thread.
• Partial threading offers an unthreaded shank for precise clamping force and shear resistance in structured connections.
• Compliance with SAE J429, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations for safe, global use.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 5 zinc-plated steel hex head screws address critical challenges in machinery assembly, structural framing, and equipment manufacturing. The UNC coarse thread and external hex drive facilitate rapid installation with standard tools, minimizing assembly time while the flange design distributes clamp load effectively, preventing surface damage and loosening under vibration. With a Rockwell C22 hardness and 110,000 psi tensile strength, they provide reliable performance in dynamic load conditions, making them ideal for construction, automotive, and industrial maintenance where durability and corrosion resistance are paramount. The partial threading ensures optimal grip in pre-drilled holes, enhancing joint integrity.

Specification Summary & Compliance

This screw features a 1/2"-13 UNC thread with Class 2A fit for standard tolerance and easy assembly. It meets IFI 111 / SAE J429 specifications for Grade 5 fasteners, ensuring consistent strength and dimensional accuracy. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for industrial use.