
⑧ Pipe Tap Series Overall length L Thread length ℓ Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk DIN GGST G Spiral Fluted Taps (for blind hole) ① DIN Z-PRO Straight Fluted Taps for Parallel Pipe Threads, for Cast Irons Spiral Fluted Taps (for through hole) ② Specification ■Suitable for hard and abrasive materials such <2D Coating as cast irons. Considering comparatively quick wear, GGST G is properly oversized. Spiral Pointed Taps (for through hole) ③ Recommended Tapping Speeds depending on Materials Cast irons Ductile cast irons 鋳鉄 強靱鋳鉄 5 20 〜 5 20 〜 Hand Taps ( m / min ) ( m / min ) ④ TYPE:1 Cemented Carbide Taps ⑤ Segment:1H Roll Taps ⑥ L ℓ ℓs Ds K ℓk No. of TYPE Size Class Code Chamfer (mm) (mm) (mm) (mm) (mm) (mm) flutes 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 Special Thread Taps Simple Inspection Tools G 3/8-19 - 3104130008 C(2.5P) 100 21 51 12 9 12 4 1 ⑦ G 1/2-14 - 3104130009 C(2.5P) 125 24 64 16 12 15 4 1 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 Pipe Taps ⑧ Thread Mills Premium Thread Mills ⑨ Dies ⑩ Center Drills Centering Tools ⑪ DIN ⑧-53 ※ This product is different from JIS products in shape and dimensions, please be careful when using.