S-92979A159 3/8"-16 x 2 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 coating, extending service life in demanding environments.
• Superior tensile strength of 110,000 psi ensures reliable performance under high-stress conditions, reducing failure risks.
• Class 3A thread fit provides precise, secure engagement for vibration-resistant assemblies in industrial applications.
• Flanged hex head design eliminates the need for separate washers, speeding up installation and distributing load effectively.
• Partially threaded shank allows for controlled clamping force, ideal for materials requiring precise joint integrity.
• Compliance with SAE J429 and IFI 111 standards guarantees consistent quality and interchangeability in mechanical systems.
• RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global supply chains.

Professional Applications & Engineering Value

Engineered for heavy-duty fastening in construction, machinery, and automotive sectors, this Grade 5 zinc-plated steel hex head screw addresses critical challenges like vibration loosening and corrosion. The UNC coarse thread and external hex drive facilitate quick assembly in coarse-grained materials, while the flange design enhances stability without additional components. With a Rockwell C25 hardness and 110,000 psi tensile strength, it withstands dynamic loads, making it a dependable choice for structural frames, equipment mounts, and other industrial applications requiring durable, compliant fasteners.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC thread with Class 3A fit for high precision, a length of 2 1/2", and partial threading. It conforms to IFI 111 SAE J429 for mechanical properties, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe, standardized use in professional settings.