Historical
ISO 1119:1998
Geometrical Product Specifications (GPS) - Series of conical tapers and taper angles
This International Standard gives 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 mechanical engineering.
It applies only to plain conical surfaces, and excludes prismatic pieces, taper threads, bevel gears, etc.
The method of dimensioning and tolerancing conical surfaces on drawings is covered in ISO 3040.
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International Organization for Standardization [iso]