03A041 - Walter 4-40 NC High Speed Steel Taper Tap

Precision Threading with Walter High Speed Steel Taps

The Walter 03A041 4-40 NC Taper Tap is a premium-grade threading tool designed for industrial professionals who demand accuracy and longevity. Crafted from top-quality High Speed Steel (HSS), this tap is engineered to withstand the high thermal stresses and mechanical loads associated with cutting threads in tough metals. Unlike standard carbon steel taps, Walter's HSS composition ensures the cutting edges remain sharp longer, reducing the frequency of tool replacements and ensuring consistent thread quality over the life of the tool.

This specific model features a "Taper" chamfer, which typically distributes the cutting load across 7 to 10 threads. This design is critical for starting new threads, as it allows the tap to align itself squarely with the hole before the full depth of the thread is cut. It is the ideal choice for through-holes or for the initial pass in a blind hole before following up with a plug or bottoming tap. The precision-ground threads reduce friction and torque requirements, resulting in a smoother cutting action and a cleaner finish on the workpiece.

Whether you are working with mild steel, stainless steel, or non-ferrous metals like aluminum, the Walter 4-40 NC Taper Tap delivers reliable performance. Its hardened and tempered structure prevents chipping and breakage, common issues in lower-quality threading tools. For maintenance, repair, and operations (MRO) or production environments, trusting Walter's engineering ensures that every threaded hole meets strict tolerance standards.