Centre holes. Types A,B and R. Dimensions.

Main informations

National standards and national normative documents

June 1983

3 p.

NF E60-051

25.100.30 Drills, countersinks, reamers

E60-051

1 - 01/08/1984

Replaced standards (1)

NF E60-051

July 1972

Standard Cancelled

Centre holes, types A, B and R-recommended dimensions

Standard replaced by (3)

NF ISO 866

January 2004

Standard Cancelled

Centre drills for centre holes without protecting chamfers - Type A

Le présent document donne les dimensions des forets à centrer de type A et des trous de centre correspondants.

NF ISO 2540

January 2004

Standard Cancelled

Centre drills for centre holes with protecting chamfer - Type B

Le présent document donne les dimensions des forets à centrer de type B et des trous de centre correspondants.

NF ISO 2541

January 2004

Standard Cancelled

Centre drills for centre holes with radius form - Type R

Le présent document donne les dimensions des forets à centrer de type R et des trous de centre correspondants.

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