TurningMillingDrillingTechnicalInformationIndex Solid carbide drills System code – solid carbide drills A 1 5 3 6 SU 05 (C) – 0850 (S) 1 2 3 4 5 6 7 8 9 Type Shank type Code Description Code Description 1 Forets 1 Straight shank 2 Square shank DIN 10 3 Double flattened straight shank DIN 1809 5 Straight shank DIN 6535 HA 6 Weldon shank DIN 6535 HB B 7 Whistle Notch shank DIN 6535 HE 9 Morse taper shank 1 2 Drill type Tool length Code Description Code Description 0 Twist drill 1 DIN 338 3 Universal twist drill 2 DIN 1897 4 NC tapping device 3 QJ/ZZQ(TO)01.001.002 5 Step drill 4 DIN 6537 K C 6 Three-lips drill 5 DIN 6539 7 Straight flute drill 6 DIN 6537 L 8 Deep hole drill 7 Factory standard ZCC-C 8 Factory standard ZCC-D 9 Factory standard ZCC-E 3 4 Application Code Description SU Twist drill for general machining D SUK Twist drill for cast iron SL Twist drill for deep hole drilling SLK Deep hole drill for cast iron SP Pilot drill ST Twist drill for soft steel and stainless steel SH Twist drill for hardened materials SC Twist drill for non-ferrous metals and cast iron PA Three-lips drill for non-ferrous metals and cast iron PC Straight flute drill for non-ferrous metals and cast iron 5 E C 28