Drill America DWTHS1/4-1-1/4SET 6 Piece NPT Pipe Tap Set in Wooden Case (1/4 ", 3/8 ", 1/2 ", 3/4 ", 1 " and 1-1/4 "), High Speed Steel, DWT Series,Small

Description

Also called 'Pipe Taps', National Pipe Taper Taps are appropriate for threading a wide variety of materials both ferrous and non-ferrous. The nominal size of a Pipe Tap is that of the pipe fitting to be tapped, not the actual size of the tap. The thread tapers 3/4 of an inch per foot. All Pipe Taps furnished with a 2-1/2 to 3-1/2 thread chamfer. NPT threads require the use of a “sealer” like teflon tape or pipe compound.