Withdrawn
ISO 3438:2003 lays down the dimensions of subland twist drills with Morse taper shanks for holes prior to tapping screw threads. The drills have been designed to produce holes prior to tapping metric threads (coarse pitch series) over a selected range of M8 to M30. ISO 3438:2003 complements ISO 2306.
WITHDRAWN
ISO 3438:1975
WITHDRAWN
ISO 3438:2003
95.99
Withdrawal of Standard
May 2, 2013
PUBLISHED
ISO 3438:2013