Subland twist drills for holes prior to tapping screw threads.
STANDARD published on 30.6.2013
Designation standards: BS ISO 3438:2013
Publication date standards: 30.6.2013
The number of pages: 14
Approximate weight : 42 g (0.09 lbs)
Country: British technical standard
Category: Technical standards BS
ISBN: 978 0 580 77002 9 Status: Under Review