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 ZELX MOLD NPT ① Hand Taps for Hard-to-Machine Materials For American Taper Pipe Threads ② Specification ■Suitable for hard steels of 35 〜 45HRC, such as forgings and thermal refined steels of high carbon steels and alloy steels, and die steels. ③ Recommended Tapping Speed depending on Materials Thermal refined steels Tool steels 調質鋼 工具鋼 〜5 〜5 (m/min) (m/min)35〜45HRC ④ TYPE:1 TYPE:2 Projection Projection ⑤ Segment:1H Size Class Code Chamfer L(inch) ℓ Projection Ds(inch)(inch)(inch)K(inch) ℓk(inch) No. offlutes TYPE ⑥ For American Pipe Threads 1/8-27 NPT ANSI G Y89641 3P 2.125 0.75 0.312 0.437 0.328 0.375 4 1 1/4-18 NPT ANSI G Y89643 3P 2.437 1.062 0.459 0.562 0.421 0.437 4 1 3/8-18 NPT ANSI G Y89644 3P 2.562 1.062 0.454 0.7 0.531 0.5 4 1 ⑦ 1/2-14 NPT ANSI G Y89645 3P 3.125 1.375 0.579 0.687 0.515 0.625 4 2 3/4-14 NPT ANSI G Y89646 3P 3.25 1.375 0.565 0.906 0.679 0.687 5 2 ⑧ ⑨ ⑩ ⑪ ANSI ※ This product is different from JIS products in shape and dimensions, please be careful when using. ⑧-82