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 ANSI ⑧ Pipe Tap Series Overall Thread Shank Size of Length oflengthlengthdia.squaresquareLℓDsKℓk ANSI ① NPT 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 ③ Oxide parts in the connection of parts for pipes. Recommended Tapping Speed 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 ④ (m/min) (m/min) (m/min) TYPE:1 TYPE:2 ⑤ Projection Projection Segment:1G ⑥ Size Class Code Chamfer L(inch) ℓ Projection Ds(inch)(inch)(inch)K(inch)ℓk(inch) No. offlutes TYPE For American Pipe Threads 1/16-27 NPT ANSI G Y83100 3P 2.125 0.687 0.312 0.312 0.234 0.375 4 1 1/16-27 NPT ANSI G Y83100BR 3P 2.125 0.687 0.312 0.312 0.234 0.375 4 1 ⑦ 1/8-27 NPT ANSI G Y83101 3P 2.125 0.75 0.312 0.437 0.328 0.375 4 1 1/8-27 NPT ANSI G Y83101BR 3P 2.125 0.75 0.312 0.437 0.328 0.375 4 1 1/8-27 NPT ANSI G Y83102 3P 2.125 0.75 0.312 0.312 0.234 0.375 4 2 1/8-27 NPT ANSI G Y83102BR 3P 2.125 0.75 0.312 0.312 0.234 0.375 4 2 1/4-18 NPT ANSI G Y83103 3P 2.437 1.062 0.459 0.562 0.421 0.437 4 1 ⑧ 1/4-18 NPT ANSI G Y83103BR 3P 2.437 1.062 0.459 0.562 0.421 0.437 4 1 3/8-18 NPT ANSI G Y83104 3P 2.562 1.062 0.454 0.7 0.531 0.5 4 1 3/8-18 NPT ANSI G Y83104BR 3P 2.562 1.062 0.454 0.7 0.531 0.5 4 1 1/2-14 NPT ANSI G Y83105 3P 3.125 1.375 0.579 0.687 0.515 0.625 4 2 ⑨ 1/2-14 NPT ANSI G Y83105BR 3P 3.125 1.375 0.579 0.687 0.515 0.625 4 23/4-14 NPTANSI GY831063P3.251.3750.5650.9060.6790.68742 3/4-14 NPT ANSI G Y83106BR 3P 3.25 1.375 0.565 0.906 0.679 0.687 4 2 1 -11 1/2 NPT ANSI G Y83107 3P 3.75 1.75 0.678 1.125 0.843 0.812 5 2 1 -11 1/2 NPT ANSI G Y83107BR 3P 3.75 1.75 0.678 1.125 0.843 0.812 5 2 ⑩ 1 1/4-11 1/2 NPT ANSI G Y83108 3P 4 1.75 0.686 1.312 0.984 0.937 5 2 1 1/4-11 1/2 NPT ANSI G Y83108BR 3P 4 1.75 0.686 1.312 0.984 0.937 5 2 1 1/2-11 1/2 NPT ANSI G Y83109 3P 4.25 1.75 0.699 1.5 1.125 1 6 2 1 1/2-11 1/2 NPT ANSI G Y83109BR 3P 4.25 1.75 0.699 1.5 1.125 1 6 2 2 -11 1/2 NPT ANSI G Y83110 3P 4.5 1.75 0.667 1.875 1.406 1.125 6 2 ⑪ 2 -11 1/2 NPT ANSI G Y83110BR 3P 4.5 1.75 0.667 1.875 1.406 1.125 6 2 ANSI ※ This product is different from JIS products in shape and dimensions, please be careful when using. ⑧-81 ※ BR at the end of a product code indicates untreated products.