Pipe Tap Series Overall length L Thread length ℓ Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk ⑧ DIN GG-HT G Spiral Fluted Taps (for blind hole) ① DIN Hand Taps for Parallel Pipe Threads, for Cast Irons (Coated) Spiral Fluted Taps (for through hole) ② Specification ■Suitable for hard and abrasive <2D Coating materials such as cast irons. Considering comparatively Spiral Pointed Taps (for through hole) Nitride quick wear, GG-HT G is ③ properly oversized. Recommended Tapping Speeds depending on Materials Cast irons Ductile cast irons 鋳鉄 強靱鋳鉄 5 10 〜 5 10 〜 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 - 9926R02TC 2.5P 90 19 46 7 5.5 8 4 1 G 1/4-19 - 9926R04TC 2.5P 100 21 51 11 9 12 4 1 Special Thread Taps Simple Inspection Tools G 3/8-19 - 9926R06TC 2.5P 100 21 51 12 9 12 4 1 ⑦ G 1/2-14 - 9926R08TC 2.5P 125 24 64 16 12 15 4 1 Pipe Taps ⑧ Thread Mills Premium Thread Mills ⑨ Dies ⑩ Center Drills Centering Tools ⑪ DIN ※ This product is different from JIS products in shape and dimensions, please be careful when using. ⑧-54