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When you are fabricating a custom part or repairing a stripped thread in a critical piece of equipment, the quality of your tap determines the success of the job. The Walter 03B086 1/2-20 NF Bottoming Tap is the tool you reach for when you need to cut fine threads all the way to the bottom of a hole. Made from industrial-strength High Speed Steel (HSS), this tap cuts cleanly through steel, stainless steel, and aluminum without binding or dulling prematurely. For welders and fabricators, having a reliable bottoming tap is essential for finishing blind holes—holes that don't go all the way through the metal—where a standard tap would leave the bottom unthreaded.
Why choose a bottoming tap? If you have ever tried to bolt a bracket onto a blind hole only to find the bolt bottoms out before it tightens, you know the frustration. This is usually because the threads didn't go deep enough. The Walter 03B086 solves this by having almost no taper at the tip, allowing it to cut full-depth threads right to the bottom. It is typically used as the final step after starting the hole with a taper or plug tap. This ensures your bolts seat fully and hold securely, which is vital for vibration-prone environments like vehicle frames or heavy machinery.
The 1/2-20 Fine Thread (NF) configuration provides greater strength and finer adjustment capabilities than coarse threads, making it a common spec in automotive and precision assembly work. Don't risk snapping a cheap carbon steel tap in your workpiece. Trust Walter's HSS construction to get the job done right the first time. Whether you are tapping a new hole in a weldment or chasing damaged threads in a casting, this tool provides the performance professional welders expect.
| Additional Information |
|---|
| Brand:Walter Surface Technologies |
| Packaging Description:1 per each |
| Used To Cut:Steel, Stainless Steel & Aluminum |
| Thread Size:1/2-20 NF |
| Tap Style:Bottoming |
| Material:High-Speed Steel (HSS) |
| Thread Standard:NF (National Fine) |
