ANSI 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 Shank Size of Length oflengthlengthdia.squaresquareLℓDsKℓk⑧ ANSI NPS ① Hand Taps for American Parallel Pipe Threads ② Specification ■The NPS tap is a hand tap for American parallel pipe threads and is used for products whose main purpose is the tightness of the threaded Oxide part in connecting pipe parts and the like. ③ Recommended Tapping Speed depending on Materials Low carbon steels Medium carbon steels High carbon steels 低炭素鋼 中炭素鋼 高炭素鋼 5〜10 5〜10 5〜10 (m/min) (m/min) (m/min) ④ TYPE:1 TYPE:2 ⑤ Segment:1G Size Class Code Chamfer L(inch) ℓ(inch) Ds(inch) K(inch) ℓk(inch) No. offlutes TYPE ⑥ For American Pipe Threads 1/8-27 NPS ANSI G Y83301 4P 2.125 0.75 0.437 0.328 0.375 4 1 1/8-27 NPS ANSI G Y83301BR 4P 2.125 0.75 0.437 0.328 0.375 4 1 1/8-27 NPS ANSI G Y83302 4P 2.125 0.75 0.312 0.234 0.375 4 2 ⑦ 1/8-27 NPS ANSI G Y83302BR 4P 2.125 0.75 0.312 0.234 0.375 4 2 1/4-18 NPS ANSI G Y83303 4P 2.437 1.062 0.562 0.421 0.437 4 1 1/4-18 NPS ANSI G Y83303BR 4P 2.437 1.062 0.562 0.421 0.437 4 1 3/8-18 NPS ANSI G Y83304 4P 2.562 1.062 0.7 0.531 0.5 4 1 3/8-18 NPS ANSI G Y83304BR 4P 2.562 1.062 0.7 0.531 0.5 4 1 ⑧ 1/2-14 NPS ANSI G Y83305 4P 3.125 1.375 0.687 0.515 0.625 4 2 1/2-14 NPS ANSI G Y83305BR 4P 3.125 1.375 0.687 0.515 0.625 4 2 3/4-14 NPS ANSI G Y83306 4P 3.25 1.375 0.906 0.679 0.687 5 2 3/4-14 NPS ANSI G Y83306BR 4P 3.25 1.375 0.906 0.679 0.687 5 21 -11 1/2 NPSANSI GY833074P3.751.751.1250.8430.81252 ⑨ 1 -11 1/2 NPS ANSI G Y83307BR 4P 3.75 1.75 1.125 0.843 0.812 5 2 ⑩ ⑪ ANSI ※ This product is different from JIS products in shape and dimensions, please be careful when using. ※ BR at the end of a product code indicates untreated products. ⑧-98