This International Standard provides calculated values for a series of cones or conical tapers, ranging from 120° to less than 1°, or ratios from 1:0,289 to 1:500, intended for general use in technical engineering.
DS/EN ISO 1119:2012 history
2012DS/EN ISO 1119:2012 Geometrical product specifications (GPS) - Series of conical tapers and taper angles