
| E High speed steel | Nitriding/Oxidizing | Cutting length |
| Nitride Oxide | ||
| High speed steel | Coating Coated | Spiral pointed tap |
| through hole use | ||
| High speed steel | For blind hole with | Hand tap |
| (Cobalt HSS) | through coolant hole | |
| Powder HSS | For through hole with | Spiral fluted tap |
| radial coolant hole | through hole use | |
| Ultra micro grain | For left hand thread | Spiral fluted tap |
| cemented carbide | blind hole use | |
| Left hand | ||
| Low spiral | ||
| Alloy steel | For synchronized | fluted tap |
| feeding | blind hole use | |
| Low spiral fluted tap | ||
| Tool | Number of threads | blind hole use |
| Tool steel | ||
| steel | on chamfer | specially for horizontal |
| tapping | ||
| Front face | ||
| Number of threads | Carbon steel and | |
| low alloy steel Specification | ||
| Oxidizing | on chamfer | IS P Tapping Speeds |
5 〜10 Oxide (for Round Die) (m/min) Center drills
Nitriding left hand cut Nitride
COLOUR RINGS
YELLOW for sticky and soft steel ≤500N/mm2
BLUE (VA) for stainless steel and general steel
RED for hard steel 30~45 HRC
WHITE for cast iron
ORANGE for nickel base alloy, alloy steel (CrMo, NiCrMo) and stainless steel (V4A)
PINK for titanium alloy, alloy steel (CrMo, NiCrMo) ≥950N/mm2
GREEN for aluminium casting and diecasting (Si≤12%)