NA 121
DIN Standards Committee Tools and Clamping Devices
Standards
[Withdrawn]
DIN 8378
DIN 8378
Subland Twist Drills with Parallel Shank for Holes Prior to Tapping Screw Threads and for Relief Countersinks
Title (German)
Mehrfasen-Stufenbohrer mit Zylinderschaft, für Kernlochbohrungen und Freisenkungen