NA 121
DIN Standards Committee Tools and Clamping Devices
Standards
[Withdrawn]
DIN 344
DIN 344
Paralell shank core drills of hight-speed steel
Title (German)
Aufbohrer (Spiralsenker) mit Zylinderschaft aus Schnellarbeitsstahl
Responsible national committee
NA 121-01-03 AA - Countersinks, core drills and reamers of high-speed steel and hard metal tips