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

rare size tap, did what i needed it to

The bottoming tap cutting edges were not formed properly or were rolling over.

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 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.

Nice tap. Made out of metal. Surprised that it came from China but looks as though it could have been made in India. Came with neat plastic storage box that pulls apart. I don’t know why but mine has a faint smell of a grilled cheese sandwich. If that troubles you then maybe you should see if they have different flavors? I bought this to repair bolt holes but I’m sure it will come in handy to throw across the shop or at something when I get frustrated. Makes a nice Christmas gift for the handyman that has everything! I just wish it could have been made in Mexico or at least California as I like to purchase high quality crap to use once and then throw away, but I suspect I’ll lose this one like I misplace everything else! Y’all have a great day and keep on tapping!

Used it to mount a AXA tool post changer.

I bought the set for a one-time use of this odd size (M13x1.5). Price was right at about 1/3 the cost of other taps but the steel isnt top quality. The worked well to cut the threads I needed in cast 6061 aluminum. They came out clean, sharp and accurate but I dont think the taps will hold up for the long haul. Theyre a very good value for limited use. If you need to cut a lot of threads or plan to keep them for years, youd be better off spending more and getting better quality tools.

good!

You must choose which type of starter threads is best for your needs. Seven thread taper is for cutting new threads in soft metals, cased iron, or plastic. Use lots of oil. The shorter-length starter tap is best for cleaning existing threads. The super short starter thread tap is for finishing bottoming threads. I showed this tap to my friend that makes taps for a living and he said it looked ok but his stuff was much better and made of M2 tool steel. Then I told him the price and he said no, he couldnt do that for that price. Couldnt even buy the blank steel needed at that price.

I really wish they could have been supplied in high speed steel, instead of carbon steel. I tap some tough materials, and I have concerns how long these will hold up.