Overall Thread Position on Shank Size of Length of length length basic dia. dia. square square L ℓ ℓg Ds K ℓk PT-X (for blind hole) Spiral Fluted Taps X Series Hand Taps for Taper Pipe Threads, Short (ℓg) Type Specification (for through hole) Spiral Fluted Taps ■PT-X Hand Tap, adopting new tap blank, ensures properly E long projection length of the tool. Having short thread length, this tap is suitable for tapping of such machine components as have the limit in their thickness. Recommended Tapping Speeds depending on Materials (for through hole) Spiral Pointed Taps Medium carbon steels 〜5 For icon explanation, refer to P.50 Hand Taps TYPE:1 TYPE:2 g g Carbide Taps Cemented Segment:1G Roll Taps Basic L ℓ ℓg ℓs Ds K ℓk No. of Size Class Code Chamfer major dia (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes Type Stock (mm) For Pipe Threads PT 1/16-28 Ⅱ THX2T01K-8 2.5P 7.723 75 13.5 10.5 47 8 6 9 4 1 ○ PT 1/8-28 Ⅱ THX2T02K 2.5P 9.728 75 13.5 10.5 48 8 6 9 4 2 ○ Simple Inspection Tools Special Thread Taps PT 1/4-19 Ⅱ THX2T04- 2.5P 13.157 85 16.5 12.5 54 11 9 12 4 2 ○ PT 3/8-19 Ⅱ THX2T06- 2.5P 16.662 95 18 14 60 14 11 14 4 2 ○ PT 1/2-14 Ⅱ THX2T08Q 2.5P 20.955 105 22.5 17 64 18 14 17 4 2 ○ Pipe Taps Thread Mills Dies Center Drills Centering Tools JIS ◎=Standard ○=Semi standard △=Made to order Pipe-4 For improvement, spec may change without advance notice. 553