Historical

ISO 2540:1973

Centre drills for centre holes with protecting chamfer - Type B

This International Standard 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 may be straight or spiral at the option of the manufacturer.

Unless otherwise stated these drills will be right-hand cutting.

This International Standard includes an Annex giving 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.

CONTENT PROVIDER
International Organization for Standardization [iso]

Others Also Bought
Centre drills for centre holes with radius form - Type R
Centre drills for centre holes without protecting chamfers - Type A
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Document History
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Amendments & Corrections
We have no amendments or corrections for this standard.