Spiral Fluted Taps (for blind hole)Spiral Fluted Taps(for through hole)Spiral Pointed Taps(for through hole)Hand TapsCementedCarbide TapsRoll TapsSpecial Thread TapsSimple Inspection ToolsPipe TapsThread MillsPremium Thread MillsDiesCenter DrillsCentering Tools ⑦ Selection chart of taps Recommended tap ◎:Most suitable tap○:Suitable tapRecommended◆:Insolubletapping fluid◆:Water-soluble Tapping conditions Machining, in low-speed tapping area Machining, in low/middle speed tapping area Product symbol NT N-RS STI AL-HT STI AL-SP STI AL-PO STI N-CT LASTI SL Tr SL LH Tr ① Tap material Surface treatment HSS HSS NI HSS HSS NI HSS HF HSS HSS Name For generaluse For helical coilwire screwthread insertsFor helical coil wirescrew thread inserts For For trapezoidaltrapezoidalthreads Forthreadsleft-hand threads ② ③ ④ Bored Hole Shape For Metric Threads ⑦-27 ⑦-25 ⑦-3 ⑦-10 ⑦-18 ⑦-26 ⑤ For Unified Threads ⑦-5For Whitworth Threads⑦-28 For Screw Threads used on Sewing Machines Pipe Threads American Pipe Threads For Miniature Threads ⑥ For Trapezoidal Threads ⑦-42 ⑦-43 ~ S25C Low carbon steels ◆ ◎ ◆ ◎ ◆ ◎ S25C ~ S45C Medium carbon steels ◆ ○ ◆ ◎ ◆ ◎ S45C ~ High carbon steels ⑦ SCM Alloy steels 25 ~ 35HRC Heat treated steel 35 ~ 45HRC Heat treated steel 45 ~ 55HRC Heat treated steel ⑧ 55 ~ 63HRC Heat treated steelSUSStainless steels(SUS) SKD Tool steels SC Cast steels FC Cast irons ⑨ FCD Ductile cast irons Cu Copper Bs Brass ◆ ○ ◆ ◎ BsC Brass castings ◆ ○ ◆ ◎ PB Bronze ◆ ○ ◆ ◎ ⑩ AL Wrought aluminum ◆ ◎ ◆ ◎ ◆ ◎ ◆ ◎ AC, ADC Wrought aluminum ◆ ◎ ◆ ◎ ◆ ◎ ◆ ◎ ◆ ◎ Mg Magnesium alloy die castings ◆ ◎ ◆ ◎ ZDC Zinc alloy die castings ◆ ◎ ◆ ◎ ◆ ◎ ◆ ◎ ◆ ◎ ⑪ Titanium alloys Nickel base alloys Thermosetting plastic Thermoplastic resin ⑦-1