BS ISO 2540:2016
Current
The latest, up-to-date edition.
Centre drills for centre holes with protecting chamfer. Type B
Hardcopy , PDF
English
30-11-2016
This International Standard specifies the dimensions of centre drills for centre holes with protecting chamfer— TypeB. 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. AnnexA gives the recommended dimensions for the centre holes, TypeB, which can be obtained by a rational use of the centre drills listed in this International Standard.
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