
| Machining, LS-NPT | in low-speed LS-SP-S- NPT | tapping are INT-NPT | a INT-S-NPT | NPTF | LS-NPTF | Rp | Mac PS | hining, in lo SP-PS | w/middle sp G | eed tapping PF | area SP-PF | LS-PS |
| HSS | HSS | HSS OX | HSS OX | HSS | HSS | HSS | HSS | HSS | HSS | HSS | HSS | HSS |
| For Amer pipe t Long,forg | ican taper hreads eneral use | For America thre For stainless st | n taper pipe ads eel, interrupted | For American Dryseal taper pipe threads; For general use | For American Dryseal taper pipe threads Long, for general use | For para | llel pipe thr | eads; For ge | neral use | For parallel pipe threads; Long, forgeneral use | ||
| ⑧-85 | ⑧-88 | ⑧-89 | ⑧-91 | ⑧-92 | ⑧-96 | ⑧-40 | ⑧-41 | ⑧-45 | ⑧-49 | ⑧-70 | ⑧-74 | ⑧-44 |
| ◆ ◎ | ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | |||
| ◆ ◎ | ◆ ◎ | ◆ ◎ | ◆ ◎ | ◆ ◎ | ◆ ◎ | ◆ ◎ | ◆ ◎ | ◆ ◎ | ◆ ◎ | ◆ ◎ | ||
| ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | ◆ ○ | ||
| ◆ ○ | ◆ ○ | ◆ ○ | ||||||||||
| ◆ ◎ ◆ ○ | ◆ ◎ ◆ ○ |
Tap material Name For American taper pipe threads; For general use
Bored Hole Shape For Metric Threads For Unified Threads For Whitworth Threads For Screw Threads used on Sewing Machines
For Miniature Threads For Trapezoidal Threads
| 25~35HRC | Heat treated steel |
| 35~45HRC | Heat treated steel |
| 45~55HRC | Heat treated steel |
| 55~63HRC | Heat treated steel |
SKD Tool 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