Taper Dowel Pins can be used for plates, gauges and tools which require absolute alignment. They release easily, without galling, particularly in soft plate applications. Taper pins have a uniform taper over the pin length with both ends crowned. The major diameter of the large end is the basis for pin size. The diameter at the small end is computed by multiplying the nominal length of the pin by the factor 0.02083 and subtracting the result from the basic pin diameter. The taper of these pins is 0.25 + or -0.006 per foot. These pins are not for blind holes. A tapered through hole is required.