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ISO 2306:1972

Drills for use prior to tapping screw threads ISO 2306:1972

Publication date:   Jul 1, 1972

General information

90.93 Standard confirmed   Oct 31, 2022

ISO

ISO/TC 29/SC 9 Tools with defined cutting edges, holding tools, cutting items, adaptive items and interfaces

International Standard

25.100.30   Drills, countersinks, reamers

Buying

Published

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Scope

Specifies the sizes of these drills for ISO metric threads (tables 1 and 2). ISO inch threads (tables 3 and 4) and pipe threads (tables 5 and 6). Applies to screw threads of normal length of engagement, the drill diamter being approximately equal to the nominal diameter of the thread minus the pitch. The sizes (except for those sizes indicated by an asterisk) have been selected from ISO 235 and are to be used in the future.

Life cycle

NOW

PUBLISHED
ISO 2306:1972
90.93 Standard confirmed
Oct 31, 2022

REVISED BY

ABANDON
ISO/DIS 2306