S-90602A237 1/2"-13 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 ensures reliable performance in high-stress industrial environments, reducing the risk of fastener failure.
• Grade 8 classification guarantees superior hardness (Rockwell C32) for enhanced durability and resistance to wear under heavy loads.
• Zinc yellow-chromate plating on steel provides excellent corrosion resistance, extending service life in harsh or outdoor conditions.
• Flanged head design eliminates the need for separate washers, simplifying installation and distributing load evenly to prevent surface damage.
• Class 3A thread fit with UNC coarse threading offers precise, secure fastening and easy assembly in demanding applications.
• Partially threaded shank allows for controlled clamping force, ideal for components requiring vibration resistance and joint stability.
• External hex drive enables quick, tool-friendly installation with standard wrenches, boosting efficiency in maintenance and assembly tasks.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy-duty industries, such as construction, machinery, and automotive assembly, where high tensile strength and corrosion resistance are paramount. The zinc yellow-chromate plated steel construction combats rust and degradation, while the UNC coarse thread and Class 3A fit ensure tight, reliable connections that withstand vibrations and dynamic loads. The flanged head simplifies installation by integrating a washer-like function, reducing part count and assembly time. Ideal for securing structural components, this partially threaded screw provides optimal clamp load distribution, making it a trusted choice for engineers seeking durability and compliance with SAE J429 standards in demanding environments.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and UNC coarse threading (1/2"-13 size) to facilitate quick assembly. It meets IFI 111 and SAE J429 specifications, ensuring consistent quality and performance. The product complies with industry regulations for material and manufacturing integrity, supporting reliable use in commercial and industrial applications without additional RoHS or REACH declarations specified here.