IRWIN Bottoming Tap, #6-48NS (1221)

Great

There are three basis types of taps: flute, plug and bottoming. This is a flute tap, not a bottoming tap, the photo does not include the flute point at the end of this tap. It looks like the bottom of the tap in the photo has been cut off in the photo. This lead me to believe the description, which said this was a bottoming tap, which it is not. Unless I want to grind off the point of this flute tap, I can not use this tap.

A good quality tap, does the job effectively. But, the bottoming taps Im used to are completely flat at the end with the cutting edges all the way to the end, this is not. This is more like a plug tap than a bottoming tap. Still works, but be aware of that.

Worked very well tapping a barrel for a bead sight!

Great quality and it works perfectly!

Purchased the tap more as a thread chaser to clean up threads on rifle receiver. This worked great for cleaning out old Blue Loctite from the scope base screws.

Cut threads without any issues. Would recommend as a purchase.

Seems well made, but did not use, since appeared would have enlarged threads for Savage 12 FV scope bases too much, and ended up not even having to chase threads in order to mount Warne 7666-20MOA picatinny rail.

Worked perfect....for those that dont know use your drill press manually to thread your hole right after you drill it..once you reach how far you want unchuck the tap and back it outby hand to make sure you feel that it threaded good and comes out with ease. I bought three taps afraid they would break but using above method kept that from happening. Will probably rust away before I ever get to second one.

The tip of the tap (which will not make threads) is a bit longer for a bottoming tap but the quality of the tap is OK and it fits very well on the threaded holes of the rifle leaving a clean thread.