JIS Spiral Fluted Taps (for blind hole)Spiral Fluted Taps(for through hole)Spiral Pointed Taps(for through hole)Hand TapsCementedCarbide TapsRoll TapsSpecial Thread TapsSimple Inspection ToolsPipe TapsThread MillsPremium Thread MillsDiesCenter DrillsCentering Tools Pipe Tap Series Overall Thread Position on Shank Size of Length oflengthlengthbasic dia.dia.squaresquareLℓℓgDsKℓk⑧ JIS NPT ① Hand Taps for American Taper Pipe Threads ② Specification ■The NPT tap is a hand tap for the American tapered pipe threads and is used for products whose main purpose is the tightness of threaded parts in the connection of parts for pipes. 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 (m/min) (m/min) (m/min) ④ TYPE:1 TYPE:2 g g ⑤ Segment:1G Size Class Code BasicChamfermajordia(mm)L(mm)ℓ(mm) ℓg(mm) Ds(mm) K(mm) ℓk(mm)No. offlutes TYPE MSRP ⑥ For American Pipe Threads 1/16-27 NPT ANSI G TNPT01L 3P 7.770 54 17 12 8 6 9 4 1 ¥4,890 1/8-27 NPT ANSI G TNPT02L 3P 10.117 55 19 12.05 8 6 9 4 2 ¥4,890 1/4-18 NPT ANSI G TNPT04O 3P 13.426 62 28 17.45 11 9 12 4 2 ¥6,930 ⑦ 3/8-18 NPT ANSI G TNPT06O 3P 16.866 65 28 17.65 14 11 14 4 2 ¥11,600 1/2-14 NPT ANSI G TNPT08Q 3P 20.980 80 35 22.85 18 14 17 4 2 ¥19,100 3/4-14 NPT ANSI G TNPT12Q 3P 26.325 85 35 22.95 23 17 20 4 2 ¥31,800 1 -11 1/2 NPT ANSI G TNPT16T 3P 32.934 95 45 27.4 26 21 24 5 2 ¥58,900 1 1/4-11 1/2 NPT ANSI G TNPT20T 3P 41.689 105 45 28.1 32 26 30 5 2 ¥89,300 ※ ⑧ 1 1/2-11 1/2 NPT ANSI G TNPT24T 3P 47.760 110 45 28.4 38 29 32 6 2 ¥127,000 ※ 2 -11 1/2 NPT ANSI G TNPT32T 3P 59.797 120 50 28 46 35 38 6 2 ¥200,000 ※ 2 1/2-8 NPT ANSI G TNPT40X 3P 72.273 145 65 40.8 55 41 44 8 2 ¥329,000 ※ 3 -8 NPT ANSI G TNPT48X 3P 88.184 155 65 42.95 65 50 52 8 2 ¥511,000 ※ ⑨ ⑩ ⑪ JIS ※ = Specified Distribution Items. Made to order products. ⑧-80