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ISO 2306:1972

Current Revision

Drills for use prior to tapping screw threads

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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.


SDO ISO: International Organization for Standardization
Document Number ISO 2306
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 29/SC 2
Publish Date Document Id Type View
Not Available ISO 2306:1972 Revision