Hand Tap Sets, High Speed Steel (TAP SET 1/4-28 4-FLUT 1500S)

TAP SET 1/4-28 4-FLUT 1500S|These general purpose taps by Dormer can be used by hand or under power, in through or blind holes, and are suitable for tapping most materials. The chips are retained in the flutes during use. Three-fluted taps have the greatest chip-holding capacity and should be used, in the size range where available, for tapping holes deeper than 1-1/2 diameters. Each of the taps feature American National thread forms, and each has its own chamfer style:  Taper – 7 to 10 threads, Plug – 3 to 5, Bottoming – 1 to 2.