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

Bought this tap to thread holes in a cast iron transmission pan on an old tractor. It cut the iron no problem. Did 8 holes and was still cutting the threads well. Very happy. I used a size F drill bit and then tapped the holes with this. Nice tool.

This 3-48 tap cut cleanly and easily, small taps are always a challenge. Very nice

I hand tapped over 30 holes at 4mm depth for some grub screws and they all came out perfect. Lots of the negative comments are from misuse. Remember to use cutting oil and back out a little constantly. Most importantly, make sure you are pre-drilling the right size diameter hole before tapping. The correct size can be found online. For an M4 tap, you need a 3.3mm hole.

Great for mounting sights on guns.

I bought these having to do a project. Tap works great!

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

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

Worked like charm saved my but on valve cover head did what supposed to do. Stripped and crossed threaded bolts suck glad u guys had right size great quality held up still looks good glad to add to my tap set will get more taps from u guys in future

This 6-40 tap cleans the Ruger front sight hole on the Mark III & IV 22/45 Lite.

As a gunsmith I deal with many abused platforms. This tap works wonders for chasing 6-40 screws like scope rings and small trigger group screw holes. Ordered and it showed up as promised.