① Spiral Fluted Tap Series for blind hole Overall length L Chamfer + full thread ℓt Thread length ℓ Thread + Neck ℓn length Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk DIN SP V Spiral Fluted Taps, Coated L ℓt ℓ ℓn ℓs Ds K ℓk No. of TYPE Size Class Code Chamfer Spiral Fluted Taps (for blind hole) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes ① M18 × 2.5 ISO2 9740018TI 2.5P 125 - 20 - 64 14 11 14 4 4 M18 × 1.5 ISO2 9840018OTI 2.5P 110 - 14 - 56 14 11 14 4 4 M20 × 2.5 ISO2 9740020TI 2.5P 140 - 20 - 71 16 12 15 4 4 M20 × 1.5 ISO2 9840020OTI 2.5P 125 - 14 - 64 16 12 15 4 4 Spiral Fluted Taps (for through hole) M22 × 2.5 ISO2 9740022TI 2.5P 140 - 20 - 71 18 14.5 17 4 4 ② M22 × 1.5 ISO2 9840022OTI 2.5P 125 - 14 - 64 18 14.5 17 4 4 M24 × 3 ISO2 9740024TI 2.5P 160 - 25 - 82 18 14.5 17 4 4 For G Threads G 1/8-28 - 9940R02TI 2.5P 90 - 12 - 46 7 5.5 8 3 4 Spiral Pointed Taps (for through hole) ③ G 1/4-19 - 9940R04TI 2.5P 100 - 14 - 51 11 9 12 3 4 G 3/8-19 - 9940R06TI 2.5P 100 - 14 - 51 12 9 12 3 4 G 1/2-14 - 9940R08TI 2.5P 125 - 18 - 64 16 12 15 4 4 Hand Taps ④ Cemented Carbide Taps ⑤ Roll Taps ⑥ Special Thread Taps Simple Inspection Tools ⑦ Pipe Taps ⑧ Thread Mills Premium Thread Mills ⑨ Dies ⑩ Center Drills Centering Tools ⑪ DIN ①-81 ※ This product is different from JIS products in shape and dimensions, please be careful when using.