BS 1983-7:1994 : ISO 3442:1991 : Chucks for machine tools and portable power tools — Part 7: Specification for workholding chucks with 2-piece jaws, power operated
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This International Standard specifies the size for interchangeability, and describes, with reference to ISO 230-1, the geometrical test self-centring chucks with two-piece jaws and the corresponding permissible deviations which apply.
BS 1983-7:1994 : ISO 3442:1991 : Chucks for machine tools and portable power tools — Part 7: Specification for workholding chucks with 2-piece jaws, power operated