Personally, I don't like tap sets; I prefer to buy the taps and tap drills one by one. Yes, it is more expensive in the long run, but I found that there are a lot of taps sizes in the set that I don't use.
For each tap size, there are many different types taps, each used for different scenarios and different materials. I also found that the tap set only had the right tap for the job once in a blue moon.
When I need a certain tap that I don't yet have, I will go buy 2 or three of them (or more, depending on the job) and usually half a dozen tap drills to go with them. Then, they go into one of those storage centers with lots of small drawers; each drawer is labeled for the tap or tap drill.
#3, #7, B, F are all drill sizes (.213", .201", .238", .257" respectively). They will also be listed on the drill/tap chart.
Chris Kirchen |