03A123 - Walter 12-24 NC HSS Bottoming Tap

Precision Threading with Walter High Speed Steel Taps

The Walter 12-24 NC Bottoming High Speed Steel Tap is an essential tool for industrial maintenance, repair, and fabrication professionals who demand accuracy and longevity from their cutting tools. Engineered by Walter Surface Technologies, a leader in high-performance metalworking solutions, this tap is crafted from top-grade High Speed Steel (HSS). Unlike standard carbon steel taps, HSS offers superior red hardness and wear resistance, allowing this tool to maintain a sharp cutting edge even when threading tough materials like stainless steel and mild steel.

This specific model is a "bottoming" tap, characterized by its very short chamfer length of only 1 to 2 threads. This design is critical for threading "blind holes"—holes that do not go all the way through the workpiece. A bottoming tap allows the user to cut threads almost entirely to the bottom of the hole, maximizing the grip length for bolts and screws. It is typically used as the final step in a tapping sequence, often following a taper or plug tap which starts the thread.

Walter's commitment to quality is evident in the precision grinding of the threads. This ensures that every hole tapped with the 03A123 meets strict tolerance standards, providing a tight and secure fit for fasteners. Whether you are repairing damaged threads on machinery or fabricating new components from aluminum or steel, this tap delivers the performance required for professional results. Its hardened and tempered structure resists breakage, reducing downtime and tool replacement costs in busy workshops.

Key Applications

This tap is versatile and robust, suitable for a wide range of industrial environments. It excels in maintenance workshops where thread repair is common, as well as in manufacturing settings requiring precise blind hole threading. The 12-24 NC thread size is a standard coarse thread used in many mechanical assemblies, making this a staple tool for any machinist's or millwright's toolbox.