Historical

ISO 866:1975

Centre drills for centre holes without protecting chamfers - Type A

This International Standard specifies the dimensions of centre drills for centre holes without protecting chamfers — Type A.

It covers only metric dimensions, regarded as the only recommended dimensions in the future for this type of drill.

The flutes may be straight or spiral at the option of the manufacturer.

Unless otherwise indicated, these drills will be right-hand cutting.

This International Standard includes an annex giving the recommended dimensions for the Type A centre holes, 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 with protecting chamfer - Type B
Included in Packages
This standard is not included in any packages.
Document History
Revised By:
Amendments & Corrections
We have no amendments or corrections for this standard.