S-92316A770 1/2"-20 x 2 1/2" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 PSI provides reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black phosphate steel coating extends service life in harsh industrial environments.
• Precision UNF fine threading with Class 2A fit ensures secure, vibration-resistant connections and easy assembly.
• Flanged hex head design eliminates the need for a separate washer, distributing load evenly and speeding up installation.
• Grade 8 strength classification guarantees consistent high performance for heavy-duty machinery and structural applications.
• Partially threaded shank allows for unthreaded grip length, providing enhanced clamping force where needed.
• Compliance with SAE J429, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations for global sourcing.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy-duty industrial settings, such as machinery assembly, construction equipment, and automotive frameworks. Its black phosphate steel material offers excellent resistance to rust and corrosion, prolonging component life in exposed or humid conditions. The UNF fine thread pattern and Class 2A thread fit provide superior holding power and vibration resistance, minimizing loosening under dynamic loads. The external hex drive and flanged head simplify installation with standard tools, reducing labor time while ensuring a secure, flush fit. Ideal for applications requiring high tensile strength and durability, this fastener delivers reliable performance in demanding environments like manufacturing plants and infrastructure projects.

Specification Summary & Compliance

This screw features precise inch system dimensions, including a 1/2"-20 UNF fine thread with Class 2A fit for accurate tolerance. It meets manufacturing specifications under IFI 111 (SAE J429) for Grade 8 fasteners, ensuring consistent quality and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it supports environmentally safe and sustainable sourcing for industrial use.