ISO-3438 › Subland twist drills for holes prior to tapping screw threads

ISO-3438 - 3RD EDITION - CURRENT
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ISO 3438:2013 specifies the dimensions of subland twist drills with Morse taper shanks and cylindrical shanks for holes prior to tapping screw threads.

The drills are designed to produce holes prior to tapping metric threads (coarse pitch series) over a selected range of:

  • M8 to M30 for subland twist drills with Morse taper shanks;
  • M3 to M14 for subland twist drills with cylindrical shanks.

ISO 3438:2013 complements ISO 2306.

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Document Number

ISO 3438:2013

Revision Level

3RD EDITION

Status

Current

Publication Date

May 1, 2013

Committee Number

ISO/TC 29/SC 2