S-94239A112 3/8"-16 x 3/4" SAE J429 High-Strength Grade 8 Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional strength for demanding applications with Grade 8 classification and 150,000 psi tensile strength, ensuring reliable performance under high stress.
• Superior corrosion resistance provided by the zinc-plated steel construction, extending the fastener's service life in harsh industrial environments.
• Secure and stable locking mechanism through serrations under the flange, preventing loosening from vibration in machinery and equipment.
• Easy installation and high torque capability with the external hex drive and coarse UNC threading, allowing for quick assembly and disassembly.
• Enhanced load distribution due to the integrated flange design, reducing surface pressure and the risk of material damage.
• Precise and reliable thread fit with Class 2A tolerance, ensuring consistent engagement and reducing the chance of cross-threading.
• Full compliance with industry standards including IFI 111 and SAE J429, guaranteeing quality and interoperability in professional applications.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered for heavy-duty industrial applications where failure is not an option. The zinc-plated steel material offers excellent corrosion resistance, making it ideal for outdoor machinery, automotive assemblies, and construction equipment exposed to moisture and chemicals. The coarse UNC threading and fully threaded design provide superior grip in soft materials and faster installation, reducing labor time. With a flanged head and serrations, it eliminates the need for separate washers and maintains a secure lock under constant vibration, common in manufacturing and heavy equipment. These features address critical engineering challenges by enhancing durability, simplifying maintenance, and ensuring long-term reliability in demanding environments.

Specification Summary & Compliance

The screw features a 3/8"-16 UNC thread with Class 2A fit for precise dimensional accuracy and easy assembly. It adheres to manufacturing specifications per IFI 111 and SAE J429 standards, ensuring consistent quality and performance. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally safe and sustainable industrial practices.