Walter 7/8-9 UNC Heavy Duty Power Tap for Stainless Steel

Stop Hand Tapping and Start Drilling

For welders and fabricators, tapping holes by hand is one of the most tedious and time-consuming parts of the job. The Walter 7/8-9 UNC SST Power Tap (03B641) changes the game by allowing you to use your reversible portable drill to cut threads instantly. No more wrestling with a tap wrench or worrying about breaking a tap halfway through a thick plate. This tool is built to handle the torque of a power drill and the toughness of stainless steel.

The secret is in the design. Walter has equipped this tap with their exclusive SST surface treatment, which makes the tap slicker and harder. This means it glides through stainless steel, mild steel, and aluminum without binding up. If you've ever had a tap get stuck or snap because of friction, you'll appreciate the difference this coating makes. Additionally, the "Power Tip" shoots the metal chips out the other side of the hole, keeping the threads clean and preventing the tap from clogging up. It even self-aligns, helping you start the hole straight every time.

Slippage is another common headache when trying to use round-shank tools in a drill chuck. Walter solved this by grinding three flat spots onto the shank of the tap. When you tighten your drill chuck, the jaws lock onto these flats, giving you 100% torque transfer with zero slip. Whether you are repairing damaged threads on a piece of heavy machinery or fabricating new mounting points on a structural beam, this power tap turns a 10-minute struggle into a 30-second task. It is an essential addition to any fabricator's toolbox.