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 ③ Selection chart of taps Tapping conditions Machining, in low-speed tapping area Product symbol IPO PO LS-PO LS-PO-K PO LH PO OX +PO HC+POHC - PO HC-PO OX ① Tap material Surface treatment HSS OX HSS HSS HSS HSS HSS OX HSS HSS HSS OX Name I series For generaluse Long, forgeneral use For general useLong neckFor left-handthreadsOxidedFor generaluseFor highcarbon steelsFor highcarbon steel,oxided ② ③ ④ Bored Hole Shape For Metric Threads ③-32 ③-13 ③-51 ③-58 ③-46 ③-34 ③-30 ③-76 ③-78 ⑤ For Unified ThreadsFor Whitworth Threads ③-17 ③-54 ③-47 ③-35③-18③-54③-47③-36 For Screw Threads used on Sewing Machines ③-18 Pipe Threads American Pipe Threads For Miniature Threads ⑥ For Trapezoidal Threads ~ 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 ③-1