🔧 DTAPM5C Combination Drill Tap by Greenlee for Improved SEO Review

Excellent Tap. With the built-in drill, there is never a problem with alignment. One caveat: the end of the ridge descends well, but can clear the hole if you run too fast.

Used this with a hand drill to thread in a 2020 aluminum profile and it worked like a charm. Tip: Work slowly with medium torque. Use drainage fluid. Change the direction of the drill every one or two revolutions to break up the chips (like a hand tap). I've found that sometimes it's necessary to step back completely to clean the flutes. Using this method, it was easily possible to cut a full thread with a depth of more than 10 mm.

I broke 2 rotary taps before purchasing. Although I have not used it in a drill press, I have used it successfully by hand on over a dozen aluminum V-groove taps. I did it by hand rather than with a drill because I was concerned about the warning in the previous post about having a perfectly clean unthreaded M5 hole. The handspin was a little hard on the hands, but this one was stronger than the other two and did the job.