ISO 2306:1972 (R2022)
Active , Confirmed Standard
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ISO 2306:1972 (R2022)

Drills for use prior to tapping screw threads

Summary

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.

Notes

90.93 : Norme internationale confirmée

Technical characteristics

Publisher International Organization for Standardization (ISO)
Publication Date 07/01/1972
Confirmation Date 10/31/2022
Edition 1
Page Count 5
EAN ---
ISBN ---
Weight (in grams) ---
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