S-90096A392 12-24 x 1/2" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments.
• Efficient self-tapping installation with Type F thread cutting design, reducing assembly time in aluminum, brass, cast iron, and sheet metal.
• Enhanced torque transmission and stability from the external hex/flanged head, preventing cam-out and providing a secure, wide bearing surface.
• Reliable coarse UNC threading ensures strong, vibration-resistant holds in softer materials without pre-threading.
• Full 1/2" thread engagement for maximum grip strength and load distribution across the entire fastened joint.
• Broad material compatibility allows for versatile use across multiple common industrial metals, streamlining inventory.
• Guaranteed dimensional precision and performance reliability through compliance with ASME B18.6.3 and RoHS 3 standards.

Professional Applications & Engineering Value

This 12-24 UNC tapping screw is engineered to solve critical fastening challenges in metalworking and fabrication. Its thread-cutting (Type F) tip and coarse UNC thread form create precise, strong threads in ductile materials like aluminum, brass, and cast iron, as well as sheet metal, eliminating the need for pre-tapped holes and speeding up production. The zinc-plated steel material provides a durable barrier against rust and corrosion, essential for maintaining integrity in harsh or humid conditions. The combination of an external hex drive and flanged head delivers superior clamping force and resists stripping during high-torque installation, making it a reliable, heavy-duty fastener for assembly lines, machinery, and structural components where vibration resistance and long-term performance are non-negotiable.

Specification Summary & Compliance

This screw features a No. 12 screw size with a 12-24 UNC coarse thread and is fully threaded to a 1/2" length. It is designed for use with a No. 11 drill bit (0.191" diameter). Manufacturing and dimensional accuracy conform to the ASME B18.6.3 standard (SAE J933), ensuring consistent quality and interchangeability. The product is also RoHS 3 (2015/863/EU) Compliant, confirming it is free of hazardous substances for safe use in regulated markets.