Overall Thread Shank Size of Length of length length dia. square square L ℓ Ds K ℓk Rp (for blind hole) Spiral Fluted Taps Hand Taps for Parallel Pipe Threads Specification (for through hole) Spiral Fluted Taps E Rp 3/4 ~ Recommended Tapping Speeds depending on Materials (for through hole) Spiral Pointed Taps Medium carbon steels 5〜10 For icon explanation, refer to P.50 Hand Taps TYPE:1 TYPE:2 Carbide Taps Cemented Segment:1G Roll Taps 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 Rp 1/16-28 Ⅱ TH2RP01K 3.5P 7.723 59 14 8 6 9 4 1 ○ Rp 1/8-28 Ⅱ TH2RP02K 3.5P 9.728 59 15 8 6 9 4 2 ○ Simple Inspection Tools Special Thread Taps Rp 1/4-19 Ⅱ TH2RP04- 3.5P 13.157 67 19 11 9 12 4 2 ○ Rp 3/8-19 Ⅱ TH2RP06- 3.5P 16.662 75 21 14 11 14 4 2 ○ Rp 1/2-14 Ⅱ TH2RP08Q 3.5P 20.955 87 26 18 14 17 4 2 ○ Rp 3/4-14 Ⅱ TH2RP12Q 3.5P 26.441 96 28 23 17 20 4 2 ○ Pipe Taps Rp 1-11 Ⅱ TH2RP16U 3.5P 33.249 109 33 26 21 24 5 2 ○ Rp 1 1/4-11 Ⅱ TH2RP20U 3.5P 41.910 119 36 32 26 30 5 2 ○ Rp 1 1/2-11 Ⅱ TH2RP24U 3.5P 47.803 125 37 38 29 32 6 2 ○ Rp 2-11 Ⅱ TH2RP32U 3.5P 59.614 140 41 46 35 38 6 2 ○ Thread Mills Dies Center Drills Centering Tools JIS ◎=Standard ○=Semi standard △=Made to order Pipe-26 For improvement, spec may change without advance notice. 575