They are recommended for use in through or blind holes which allow for chip accumulation in the bottom of the hole.
HSS Spiral Point Tap, #10-24, 2 Flutes HSS, Spiral Pointed, Size: 10-24, Limit H3, Number of Flutes 2. Ideal for threading a wide variety of ductile materials, copper and copper alloys, brass and non-metallics. The Machine Tap shoots chips ahead of the cutting action, thus reducing loading and clogging in the flutes.Spiral-Pointed taps, or Machine Taps, were originated to solve the problem of tap breakage in through hole tapping.