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Norm
ISO 2540:2016
Issue date: 2016 10 24
Centre drills for centre holes with protecting chamfer — Type B
ISO 2540:2016 specifies the dimensions of centre drills for centre holes with protecting chamfer ? Type B.
It covers only metric dimensions, regarded as the only recommen...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 6 Pages
Language:
English
ICS
ISO 2540:2016 specifies the dimensions of centre drills for centre holes with protecting chamfer ? Type B.
It covers only metric dimensions, regarded as the only recommended dimensions in the future for this type of drills.
The flutes can be straight or spiral at the option of manufacturer.
Unless otherwise stated, these drills are right-hand cutting.
Annex A gives the recommended dimensions for the centre holes, Type B, which can be obtained by a rational use of the centre drills listed in this International Standard.
