It's been mentioned earlier, but it cannot be stressed enough that the standard 4 flute taps are not the best option, regardless of who makes them.
You will need someplace to store the taps, and even though a regular tap and die set is not the best quality option, it is a pretty good storage option. Then replace the common most used taps and dies with good quality ones.
For normal DIY tapping chores a spiral flute or "gun tap" is the best all around choice, provided it is a through hole. The design of a spiral flute tap pushes the chips out in front of the tap, self clearing the chips.
It has a pointed tip for easy starting as well.
http://www.norsemandrill.com/Metric-Spiral-Point-Taps.php
https://www.icscuttingtools.com/spiral-point-taps.htm
There is another option as well, but the terminology can get a bit confusing. While a sipral or gun tap pushes the chips out in front of the tap, there is another configuration that shares the same name but does just the opposite. This tap pulls the chips out from the top of the hole. Sometimes it's referred to as a "High Spiral" tap, but many times it is also referred to as just a spiral tap.
A picture tells it best:
https://www.regalcuttingtools.com/products/taps/spiral-flute-taps
http://www.ymwtapsusa.com/download/newsletters/Understanding-the-basics-of-spiral-fluted-taps.pdf
These can also be used instead of a traditional bottoming tap but they don't produce threads as close to the bottom of the hole as a traditional bottoming tap will, but are very usefull in getting 95% of the threads cut, and then if necessary a bottoming tap can be used to get the final threads cut.
One word of caution using these taps. They need to be started perpendicular to the work, and are somewhat delicate. Best used in a drill press. But can be done by hand using one of these:
https://cdn.mscdirect.com/global/images/ProductImages/0659303-23.jpg
And most importantly is that the proper drill is used for the pilot hole. Close doesn't get it when tapping threads. Starrett will send you a handy pocket guide for free. Get one, and use it.
http://www.starrett.com
You will need to create an account, and then go to
Catalog/Educational and you can either download the literature or they will send you the laminated cards or wall poster free of charge. Starett is very generous in that you can order 5 of many of the items. Nice for stocking stuffers.
Here's what they look like if you want a copy now, and don't want to wait for them to mail it to you. The actual size is 3" x 5"
Decimal Card:
https://drive.google.com/open?id=1SUga3nO4WoguRj0LyVUtjY0M9Ix5DeOH
Metric Card:
https://drive.google.com/open?id=10ixac96Y7yeljspthBugrrTDOaDHLI9d
They also have wall chart for the decimal card, but not the metric one ??
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