Overall Thread Shank Size of Length of length length dia. square square L ℓ Ds K ℓk CT-PS (for blind hole) Spiral Fluted Taps Carbide Taps for Parallel Pipe Threads Specification (for through hole) Spiral Fluted Taps Recommended Tapping Speeds depending on Materials (for through hole) Spiral Pointed Taps Cast irons Ductile cast irons Brass castings TYPE:1 5〜10 5〜10 5〜10 (m/min) (m/min) (m/min) For icon explanation, refer to P.50 Hand Taps Segment:1L Carbide Taps Cemented Basic L ℓ Ds K ℓk No. of Size Class Code Chamfer major dia (mm) (mm) (mm) (mm) (mm) flutes Type Stock (mm) For Pipe Threads PS 1/8-28 Ⅱ TCPS02K 3.5P 9.728 55 19 8 6 9 4 1 △ PS 1/4-19 Ⅱ TCPS04- 3.5P 13.157 62 28 11 9 12 4 1 △ Roll Taps PS 3/8-19 Ⅱ TCPS06- 3.5P 16.662 65 28 14 11 14 4 1 △ PS 1/2-14 Ⅱ TCPS08Q 3.5P 20.955 80 35 18 14 17 4 1 △ PS 3/4-14 Ⅱ TCPS12Q 3.5P 26.441 85 35 23 17 20 4 1 △ PS 1 -11 Ⅱ TCPS16U 3.5P 33.249 95 45 26 21 24 5 1 △ Simple Inspection Tools Special Thread Taps Pipe Taps Thread Mills Dies Center Drills Centering Tools JIS ◎=Standard ○=Semi standard △=Made to order Pipe-32 For improvement, spec may change without advance notice. 581