This International Standard relates to shanks for pneumatic tools and corresponding chuck bushings and deals with the following types : — coal pick shanks; — chisel shanks; — rivet snap shanks, parallel; — rivet snap shanks, tapered; — breaker and spade shanks; — concrete breaker shanks; — rock drill shanks. The types relate to the machine for which they are mainly designed, but this does not prevent the use of the shanks for other applications. Other types of tools will be dealt with in further International Standards when the corresponding studies are completed. Pneumatic hammers and their chuck bushings are not covered by this International Standard but those features of chuck bushings (dimensions and tolerances) which ensure interchangeability are specified. For each tool mentioned above, this International Standard provides tables giving dimensions in millimetres. Dimensions in inches are given in the annex which be valid for five years from the date when this International Standard is approved.