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 DIN ⑧ Pipe Tap Series Overall Thread Shank Shank Size of Length oflengthlengthlengthdia.squaresquareLℓℓsDsKℓk DIN ① GGST G Z-PRO   Straight Fluted Taps for Parallel Pipe Threads, for Cast Irons ② Specification ■S uitable for hard and abrasive materials such Coating <2D as cast irons. Considering comparatively quick wear, GGST G is properly oversized. ③ Recommended Tapping Speeds depending on Materials Cast irons Ductile cast irons 鋳鉄 強靱鋳鉄 5〜20 5〜20 ④ (m/min) (m/min) TYPE:1 ⑤ Segment:1H ⑥ Size Class Code Chamfer L(mm) ℓ(mm) ℓs(mm) Ds(mm) K(mm) ℓk(mm) No. offlutesTYPE For G Threads G 1/8-28 - 3104130004 C(2.5P) 90 19 46 7 5.5 8 4 1 G 1/4-19 - 3104130006 C(2.5P) 100 21 51 11 9 12 4 1 ⑦ G 3/8-19 - 3104130008 C(2.5P) 100 21 51 12 9 12 4 1G 1/2-14-3104130009C(2.5P)125246416121541 G 3/4-14 - 3104130011 C(2.5P) 140 27 71 20 16 19 4 1 G 1 -11 - 3104130013 C(2.5P) 160 29 82 25 20 23 4 1 ⑧ ⑨ ⑩ ⑪ DIN ⑧-53 ※ This product is different from JIS products in shape and dimensions, please be careful when using.