Drill America DWTT1/2-13 1/2-13 Carbon Steel Taper Tap (Pack of 1), DWT Series, Uncoated (Bright)

My first/only use of these so far was to tap some holes in brass, drilled about 1-1.5 inches deep down the length of 2 brass rod (so the holes were not through-holes, and required bottom tapping). These got the job done with no fuss. Mileage may vary on harder metals, but I had no problems getting these holes tapped perfectly in brass with these taps using a little cutting lubricant (did them slowly by hand). For the money, I felt it was good value to get all 3 varieties.

This procuct met all of my expectations and was useful in the application I needed it for.

This is a taper tap which easily advances in a prepared hole of correct size or for use in chasing damaged threads. Good value for the money.

I used these to prep a new steel bicycle frame derailleur nut. Because the paint was in the threads, I could not properly screw on the derailleur. I used the more blunt one first, as I had already crossed the threads with repeated failed attempts, then I proceed to use the sharper one for a final cleanup. Very effective! Derailleur screwed right in afterwards.

rare size tap, did what i needed it to

Works great for the price

Worked as advertised. Easy and did a great job.

I expected a cheap tap, given the price, but this 1-8 tap still disappointed me. I used it to chase an already threaded hole in cast iron, way down in a deep well. It would not fit in my Lisle tap socket. The nominal spec for the flats on a 1 tap is .600; I measure my other 1 taps at .595+-.001. This one was .603 one way and .602 the other; too big for a tap socket. I had to mutilate it on a belt grinder to get it to fit.

Worked like a charm! Very satisfied with this bit

Jan2023: a performer for the price point, cuts cleanly with properly ground/dressed flute edges. Nickel-alloy content similar to more expensive taps thus easier to get started in steel.. At least the ones i received this order werent like the poorly manufactured threads you see too often.