TurningMillingDrillingTechnicalInformationIndex Solid carbide threading tools System code – solid carbide threading tools A 4 2 0 1 A (C) (S) – M5x0.8 – 6H 1 2 3 4 5 6 7 8 9 Type Shank type Code Description Code Description 4 Threading tool 1 Straight shank 2 Straight shank DIN10 5 Straight shank DIN 6535 HA 9 Conical shank B 1 2 Tool type Flute Code Description Code Description 0 Tap 1 Right-hand twist 1 Thread milling cutter 2 Straight 2 Thread former 3 Left-hand twist 3 4 Material Coolant supply C Code Description Code Description A Aluminum alloy C Internal C Cast iron M Stainless steel P Steel H Hardened steel 5 6 Blind hole Thread type Code Description Code Description D S Blind hole M5x0.8 Standard production tolerance ... Fine production tolerance 7 8 Precision class Code Description 6H Nominal diameter x pitch 6HX Fine production tolerance 9 E a b c a Thread milling b Thread drilling c Thread forming C 144