Drill America - DWT57129 1/4-20 High Speed Steel 2 Flute Spiral Point Tap, DWT Series

I threaded about 5 inches of hole before she got slow. Was able to touch up with angle grinder a few times and get another 5 inches of tapping. I was impressed that the tap didnt require much backing up to break the cutting, was able to drive ahead for many turns at a time.

originally bought the Dewalt package, which is really, really hard steel & it snapped in the hole. Now this is a really small screw in a lawnmower, holding the transformer in place that sparks the spark plug as the magnets float by, so I couldnt go bigger. Used a grinder to make an [X] on top center of hole & titanium impact bits from Harbor Freight to cut the initial hole & break bit. The larger grooves & some PB blaster, allowed the metals to collect as I turned the new tap, so I could screw unscrew, blow out/wipe & repeat, until the hole was clear for a new screw to go in. Dewalts pack, just didnt have deep enough grooves for the metals & snapped when I was unscrewing, which was likely my fault. But this bit allowed me to go deeper, so it was quicker & a better choice for my project.

Put threads in a piece of metal

Havent break yet

The price is right but you get what you pay for. It seems like a Chinese tap to me. Broke one after 14 taps. Set up on a Bridgeport, low rpm should not have been a problem.

I am very impressed with this tap and handle. I could not believe how much easier it was to cut threads using this setup. I had to keep reminding myself to use oil because this tap would cut decent dry even in 1/8 plate.

Really nice quality tap for the price.

ordered a pack of 12 taps. assumed they would all be right hand. some of them were left hand and useless.

This tap held up and did not break when using. I had broke two other brand taps and this tap held up and did not break while using it on aluminum.

Nothing to dislike. It was properly packaged, arrived on time, looked pristine, and worked like a champ.