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ISO 2306-1972 drills for use prior to tapping screw threads

Standard Number:  ISO 2306-1972
Title:  drills for use prior to tapping screw threads
Language:  English
Publication Date:  1972/7/1
Execute Date:  1972/1/1
Adopted International Standard:  AS 2181.1-1978 Screwing taps - General purpose metric screw threads Equivalent BS 1157-1975 Equivalent DIN 336 (2003-07)
Status:  Current
International Classification for Standards (ICS)MANUFACTURING ENGINEERING>>Cutting tools>>Taps and threading dies
CCS Classification for Standardsmechanical>>Process equipment>>The cutting tool
Publisher:  International Organization for Standardization (ISO)
Price:  
Number of Pages:  

Description: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.  
File Format:  PDF(Acrobat Reader) or Word version doc Document
File Size:  175KB
Tile in English:  drills for use prior to tapping screw threads

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