Walter 3/8-24 NF HSS Plug Tap for Steel and Stainless

Reliable Thread Cutting for Fabrication and Repair

When you are in the middle of a fabrication job or a critical repair, the last thing you need is a tap that snaps or cuts a sloppy thread. The Walter 3/8-24 NF Plug Tap (03B065) is built to handle the demands of the welding and MRO shop. Made from high-quality High Speed Steel, this tap is significantly more durable than standard hardware store options. It is designed to cut through mild steel, aluminum, and even stainless steel with ease, giving you professional results every time you turn the wrench. The fine thread pitch (24 TPI) allows for greater precision and holding power in your assemblies, making it an essential tool for automotive, aerospace, and general machinery applications.

The "Plug" style design of this tap makes it the workhorse of the threading world. It features a gradual taper over the first 3 to 5 threads, which helps align the tap with the hole and reduces the force needed to start the cut. This makes it an excellent choice for threading through holes where the tap passes completely through the material. It is also capable of threading blind holes, provided you don't need to thread all the way to the very bottom. The precision ground threads ensure that the tap clears chips efficiently and creates a smooth, burr-free internal thread that accepts fasteners perfectly.

Walter Surface Technologies is known for producing industrial-grade tools that solve problems, and this HSS tap is no exception. It is hardened and tempered to resist wear, meaning you get more holes per tap and less downtime replacing worn-out tooling. Whether you are cleaning up rusty threads on a repair job or tapping new holes in a custom bracket, the Walter 03B065 delivers the performance you can trust. For best results, we recommend using a quality cutting fluid like Walter Coolcut to keep the tool cool and lubricated during operation.