Drill America - DWT54506 5/16-18 UNC High Speed Steel Bottoming Tap, (Pack of 1)

Seems to be well made and is of great quality, performs great for what I needed.

It works. But it’s too small for my application

Very economical tap. Works fine!

worked for me

Cut threads very well into extruded aluminum

it literally broke on the first bolt hole I tied to clean the existing threads on.... I never have broke a tap in my life and did not put hardly any pressure on it, I do believe it was defective... I lost my money this time

Used this tap to remove some metal that had ponded in the threads of a nut that I had welded to something. The tap removed the metal cleanly and accurately, no discernable difference in fit between the repaired nut and a new one. For the average Joe this will likely work fine. Just remember to use a cutting oil to prolong the life of the cutting edges!

This tap worked for me. Had to redo a cross threaded bolt hole on my Harley. Just took it slow with plenty of oil, and after a few turns I was able to restore the threads. Just take your time.

I used this to clean up the threads on a Model A Ford Zenith carburetor jets.

This 5/8-28 tap matches the thread in the tail of a 2AA Mini Maglite. I had a battery leak, and the resulting corrosion made it very difficult to unscrew the tail cap (I had to clamp it in a chuck). I eventually got it apart, extracted the batteries, and scraped out the residue, but the threads were badly galled. I used a needle file to clean up the external threads on the tail cap, but had to buy this tap to re-cut the internal threads. Note that some internet sources say the Mini Maglite has a 27-pitch instead of a 28-pitch thread. While a 27-pitch thread would probably work just fine (since the threaded part of the cap is only about four threads long), I inspected the Maglite threads under a microscope with a thread gauge and I am certain it is actually 28 TPI. I had no problem re-cutting the internal threads with this tap, and the tail cap now screws right in. Of course, for the price of this tap I could have just bought a new flashlight. But I generally err on the side of buying new tools, and these flashlights are very common (there are at least three in my household) so Im sure this wont be my only opportunity to use it.