03B126 - Walter 3/4-16 NF High Speed Steel Bottoming Tap

Precision Threading for Blind Holes

The Walter 3/4"-16 NF Bottoming Tap (03B126) is a high-performance threading tool engineered for professional machinists and fabricators. Crafted from premium High Speed Steel (HSS), this tap is designed to withstand the rigors of industrial metalworking while maintaining a sharp cutting edge. The "Bottoming" style features a very short chamfer length, typically only 1 to 1.5 threads, making it the essential tool for cutting threads all the way to the bottom of a blind hole where a taper or plug tap would stop short.

Walter Surface Technologies is renowned for producing tools that prioritize precision and longevity. This tap features precision ground threads that reduce friction during the cutting process, resulting in cleaner, more accurate threads with less torque required. The 3/4"-16 NF (National Fine) configuration is ideal for applications requiring finer adjustments or greater tensile strength compared to coarse threads. Whether you are working with mild steel, stainless steel, or aluminum, this tool delivers consistent results.

Durability is at the core of the 03B126. The hardened HSS composition resists heat buildup and wear, ensuring that the tap retains its dimensional accuracy over an extended lifespan. It is an indispensable component for any complete tap and die set, specifically filling the need for finishing threads in non-through holes. For optimal performance, use with appropriate cutting fluids to further extend tool life and improve thread finish.