Union Butterfield 1700(M) High-Speed Steel Hand Tap, Uncoated (Bright) Finish, Round Shank with Square End, Plug Chamfer, M12-1.25 Thread Size

I needed a "one of" metric thread spaced in a M16 size. To me it would not be worth buying an entire set of taps. Although this tap was a little pricey the overall quality is excellent and the tap functioned well. The seller included a hand written note wishing me well and urged me to contact him via phone if I encountered any problems. Pretty gosh darn good customer service right there!

I used this tap to install a trailer hitch on a 9-year-old 2004 Toyota Sienna. I spent more time than I'm willing to admit to in public with liquid wrench, wire bushes, and a real wrench trying to get the threads cleared. I ordered this tap, and was able to clear all 6 holes in just a few minutes. This tapered tap found the threads under the corrosion with only a little bit of gentle finagling. I have a sliding-bar tap wrench, and was able to turn it with one hand in a confined space using one hand. If I'd had a proper tap like this one when I started, I could have saved myself a lot of time and frustration.

I bought this thing to tap the ends of some aluminum extrusions on the advice of someone who said that this particular tap was a cut above others and would greatly speed the task. I figured a tap is a tap is a tap, but I bought it anyway, and boy, am I glad I did! This tap really slices through the aluminum with a minimum of effort. I got the job done very quickly. Definitely a worthwhile addition to your toolbox.

Not a lot to say except that this tap did exactly what it was supposed to do, I used it to clean up some damaged threads on a stainless steel fitting on my sailboat and it worked fine. Seems to be of good quality.

This effortlessly cut through the steel on a firearm receiver. It was kind of scary actually because I was constantly afraid I was going to tap the whole too deep. In the end though it was perfect!

I have been a Precision Machinist for forty years. This tap is fine for limited use. If you foresee a need for a more durable high usage tap, I would recommend a Cobalt, coated tap. Like driving a car, you need to use it with caution and proper technique. Or it will surely bite you, and break.

The quality of this tap is great. It cleaned up the threads of a number of nuts and made them easy to install again. Used it on the lug nuts of my tractor which had become difficult to move even with a air hammer. Now, I can spin them with my fingers. Time will tell if the tap will hold its edge.

I have a three-flute 5mm tap that I got from Tacoma screw that I use for tapping holes. I got this unit due to glowing reviews in the RepRap community. They were right -- this thing threads with less force and faster than my existing tap. It goes in straighter, and I don't feel the need to correct the hole path as I do with my other tap. I use it to thread Misumi 2020/2040 Aluminum rails, and it works a champ.