
| Tappi Pro | ng conditions duct symbol | R-Y | N+RZ N - RZ | Machining, in N+RS N - RS | low-speed LS-N-RZ | tapping area LS-N-RS | MS+RS | HPsRZ | SURZ | R+V |
| Ta Surfa | p material ce treatment | HSS | HSS OX | HSS NI | HSS OX | HSS NI | HSS | HSS-P Coating | HSS-P Coating | HSS Coating |
| Name | For genera purpose | l For steel | For nonferrous materials | Long, for steel | Long, for nonferrous materials | For miniature threads | For miniature threads High performance | For stainless steel | Coated | |
| Bored | Hole Shape | |||||||||
| For M | etric Threads | ⑥-63 | ⑥-14 | ⑥-26 | ⑥-23 | ⑥-36 | ⑥-60 | ⑥-38 | ||
| For Ui | nified Threads | ⑥-17 | ⑥-29 | ⑥-60 | ||||||
| For Whi | tworth Threads | |||||||||
| For Screw Threads | used on Sewing Machines | |||||||||
| Pip | e Threads | |||||||||
| America | n Pipe Threads | |||||||||
| For Min | iature Threads | ⑥-62 | ⑥-62 | |||||||
| For Trap | ezoidal Threads | |||||||||
| ~S25C | Low carbon steels | ◆ ◎ | ◆ ◎ | ◆ ◎ | ◆ ◎ | ◆ ◆ ◎ | ◆ ◆ ◎ | ◆ ◆ ◎ | ||
| S25C~S45C | Medium carbon steels | ◆ ◎ | ◆ ◎ | ◆ ◆ ◎ | ◆ ◆ ○ | ◆ ◆ ◎ | ||||
| S45C~ | High carbon steels | ◆ ◆ ○ | ||||||||
| SCM | Alloy steels | |||||||||
| 25~35HRC | Heat treated steel | |||||||||
| 35~45HRC | Heat treated steel | |||||||||
| 45~55HRC | Heat treated steel | |||||||||
| 55~63HRC | Heat treated steel | |||||||||
| SUS | Stainless steels(SUS) | ◆ ○ | ◆ ◆ ◎ | ◆ ◆ ◎ | ◆ ◆ ○ | |||||
| SKD | Tool steels | |||||||||
| SC | Cast steels | |||||||||
| FC | Cast irons | |||||||||
| FCD | Ductile cast irons | |||||||||
| Cu | Copper | ◆ ◆ ○ | ||||||||
| Bs | Brass | ◆ ◎ | ||||||||
| BsC | Brass castings | |||||||||
| PB | Bronze | |||||||||
| AL | Wrought aluminum | ◆ ◎ | ◆ ◎ | ◆ ○ | ◆ ◎ | ◆ ◎ | ||||
| AC, ADC | Wrought aluminum | ◆ ◎ | ◆ ◎ | ◆ ○ | ◆ ◎ | |||||
| Mg | Magnesium alloy die castings | |||||||||
| ZDC | Zinc alloy die castings | ◆ ◎ | ◆ ◎ | ◆ ○ | ◆ ◎ | |||||
| Titanium alloys | ◆ ○ | |||||||||
| Nickel base alloys | ||||||||||
| Thermosetting plastic | ||||||||||
| Thermoplastic resin |