ISO-3439 › Historical Revision Information
Subland Twist Drills With Cylindrical Shanks for Holes Priorto Tapping Screw Threads
Subland twist drills with cylindrical shanks for holes prior to tapping screw threads
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25.100.30 (Drills, countersinks, reamers)
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Document Number
ISO 3439:1975
Revision Level
1ST EDITION
Status
Superseded
Publication Date
Sept. 1, 1975
Page Count
3 pages