Overall Thread Thread+Neck Shank Shank Size of Length of length length length length dia. square square L ℓ ℓn ℓs Ds K ℓk TYPE:1 DIN371 TYPE:2 DIN371 (for blind hole) Spiral Fluted Taps TYPE:3 DIN371 TYPE:4 DIN376 (for through hole) Spiral Fluted Taps (for through hole) Spiral Pointed Taps Segment:1D Hand Taps Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type Stock (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes For Metric Threads Carbide Taps Cemented M2 × 0.4 ISO2 SE2.0EALEN 2.5P 45 8 - - 2.8 2.1 5 2 1 ● M2.5 × 0.45 ISO2 SE2.5FALEN 2.5P 50 8 15 33 2.8 2.1 5 2 2 ● M3 × 0.5 ISO2 SE3.0GALEN 2.5P 56 9 18 34 3.5 2.7 6 3 2 ● M4 × 0.7 ISO2 SE4.0IALEN 2.5P 63 13 21 38 4.5 3.4 6 3 2 ● Roll Taps M5 × 0.8 ISO2 SE5.0KALEN 2.5P 70 14 25 39 6 4.9 8 3 2 ● M6 × 1 ISO2 SE6.0MALEN 2.5P 80 15 30 45 6 4.9 8 3 2 ● M8 × 1.25 ISO2 SD8.0NALEN 2.5P 90 19 35 47 8 6.2 9 3 3 ● M10 × 1.5 ISO2 SD010OALEN 2.5P 100 23 39 52 10 8 11 3 3 ● M12 × 1.75 ISO2 SG012PALEN 2.5P 110 26 - 56 9 7 10 3 4 ● Simple Inspection Tools Special Thread Taps M14 × 2 ISO2 SG014QALEN 2.5P 110 26 - 56 11 9 12 3 4 ● M16 × 2 ISO2 SG016QALEN 2.5P 110 26 - 56 12 9 12 3 4 ● Pipe Taps Thread Mills Dies Center Drills Centering Tools DIN SP-18 69