With the Phantom 21.300 three-piece hss hand tap set, you cut clean and accurate unc 1/4"-20 threads with a 20 tpi pitch. Containing a taper, second, and bottoming tap, this set divides the cutting load across three progressive stages to minimize breakage risk and ensure smooth control. Built from durable hss to the iso 529 standard, these taps perform reliably in general steels and non-ferrous metals. Whether repairing damaged imperial threads or cutting fresh threads in through and blind holes, you get dependable results every time.
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