ISO 2540:2016

Centre drills for centre holes with protecting chamfer — Type B

Publication date: Oct 24, 2016

General information

Current stage: 90.60 Effective date: Mar 14, 2022

Originator: ISO

Owner: ISO/TC 29/SC 9

Type: International Standard

ICS: 25.100.30

Languages: English French

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Status: Published

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Scope

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.

Life cycle

PREVIOUSLY

Revises
ISO 2540:1973

NOW

PUBLISHED
ISO 2540:2016
90.60 Close of review
Mar 14, 2022

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