Overall Thread Position on Shank Size of Length of length length basic dia. dia. square square L ℓ ℓg Ds K ℓk SU-PT (for blind hole) Spiral Fluted Taps Hand Taps for Taper Pipe Threads, Long (ℓg) Type, for Stainless Steels Specification (for through hole) Spiral Fluted Taps ■SU-PT is the hand tap suitable for stainless steels which E tend to work-harden and sticky, as well as chrome steels Oxide and molybdenum steels. PT 3/4 ~ Recommended Tapping Speeds depending on Materials (for through hole) Spiral Pointed Taps ow carbon steels Stainless steels TYPE:1 〜5 〜5 For icon explanation, refer to P.50 Hand Taps g Segment:1G Carbide Taps Cemented Basic L ℓ ℓg Ds K ℓk No. of Size Class Code Chamfer major dia (mm) (mm) (mm) (mm) (mm) (mm) flutes Type Stock (mm) For Pipe Threads PT 1/8-28 Ⅱ TU2T02K 2.5P 9.728 55 19 13 8 6 9 4 1 △ PT 1/4-19 Ⅱ TU2T04- 2.5P 13.157 62 28 21 11 9 12 4 1 △ Roll Taps PT 3/8-19 Ⅱ TU2T06- 2.5P 16.662 65 28 21 14 11 14 4 1 △ PT 1/2-14 Ⅱ TU2T08Q 2.5P 20.955 80 35 25 18 14 17 4 1 △ PT 3/4-14 Ⅱ TU2T12Q 2.5P 26.441 85 35 25 23 17 20 4 1 △ PT 1 -11 Ⅱ TU2T16U 2.5P 33.249 95 45 32 26 21 24 4 1 △ Simple Inspection Tools Special Thread Taps PT 1 1/4-11 Ⅱ TU2T20U 2.5P 41.910 105 45 32 32 26 30 5 1 △ PT 1 1/2-11 Ⅱ TU2T24U 2.5P 47.803 110 45 32 38 29 32 6 1 △ Pipe Taps Thread Mills Dies Center Drills Centering Tools JIS ◎=Standard ○=Semi standard △=Made to order Pipe-20 For improvement, spec may change without advance notice. 569