
Pipe Tap Series Overall length L Thread length ℓ Position on basic dia. ℓg Shank dia. Ds Size of square K Length of square ℓk ⑧ JIS NPTF Spiral Fluted Taps (for blind hole) ① JIS Hand Taps for American Dryseal Taper Pipe Threads Spiral Fluted Taps (for through hole) ② Specification ■The NPTF is a hand tap for the American dry seal tapered pipe threads and is used for products whose main purpose is the tightness of the Spiral Pointed Taps (for through hole) threaded part in connection with pipe parts, etc. ③ Recommended Tapping Speeds depending on Materials Medium carbon steels High carbon steels Alloy steels 中炭素鋼 高炭素鋼 合金鋼 〜 5 〜 5 〜 5 Hand Taps ( m / min ) ( m / min ) ( m / min ) ④ TYPE:1 TYPE:2 Cemented Carbide Taps ⑤ g g Segment:1G Roll Taps Basic ⑥ L ℓ ℓg Ds K ℓk No. of TYPE MSRP Size Class Code Chamfer major dia (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes For American Pipe Threads 1/16-27 NPTF ANSI G TNTF01L 3P 7.770 54 17 12 8 6 9 4 1 ¥5,870 1/8-27 NPTF ANSI G TNTF02L 3P 10.117 55 19 12.05 8 6 9 4 2 ¥5,870 Special Thread Taps Simple Inspection Tools ⑦ 1/4-18 NPTF ANSI G TNTF04O 3P 13.426 62 28 17.45 11 9 12 4 2 ¥8,310 3/8-18 NPTF ANSI G TNTF06O 3P 16.866 65 28 17.65 14 11 14 4 2 ¥13,800 1/2-14 NPTF ANSI G TNTF08Q 3P 20.980 80 35 22.85 18 14 17 4 2 ¥23,000 3/4-14 NPTF ANSI G TNTF12Q 3P 26.325 85 35 22.95 23 17 20 4 2 ¥38,200 Pipe Taps 1 -11 1/2 NPTF ANSI G TNTF16T 3P 32.934 95 45 27.4 26 21 24 5 2 ¥70,700 ⑧ 1 1/4-11 1/2 NPTF ANSI G TNTF20T 3P 41.689 105 45 28.1 32 26 30 5 2 ¥107,000 ※ 1 1/2-11 1/2 NPTF ANSI G TNTF24T 3P 47.760 110 45 28.4 38 29 32 6 2 ¥152,000 ※ 2 -11 1/2 NPTF ANSI G TNTF32T 3P 59.797 120 50 28 46 35 38 6 2 ¥240,000 ※ Thread Mills Premium Thread Mills ⑨ Dies ⑩ Center Drills Centering Tools ⑪ JIS ※ = Specified Distribution Items. Made to order products. ⑧-92