Spiral Pointed Tap Series Overall Thread Thread+Neck Shank Shank Size of Length of length length length length dia. square square L ℓ ℓn ℓs Ds K ℓk Spiral Fluted Taps (for blind hole) EH-PO Spiral Pointed Taps for Hard-to-Machine Materials Spiral Fluted Taps (for through hole) Specification ■Spiral pointed tap suitable for high hardness steels of 25 ~ 35HRC such as forgings and thermal refined steels of high carbon steels and alloy steels, and die steels. Through hole use. Spiral Pointed Taps (for through hole) Recommended Tapping Speeds depending on Materials Tool steel High tensile strength steel TYPE:1 DIN371 IS P IS P 〜5 〜5 (m/min) (m/min) 35~45HRC Hand Taps For icon explanation, refer to P.50 Cemented Carbide Taps TYPE:2 DIN371 TYPE:3 DIN376 / DIN374 Roll Taps Segment:1F Special Thread Taps Simple Inspection Tools 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 M3 × 0.5 ISO2X PD3.0GBDCB 4.5P 56 9 18 34 3.5 2.7 6 3 1 ● M4 × 0.7 ISO2X PD4.0IBDCB 4.5P 63 13 21 38 4.5 3.4 6 3 1 ● Pipe Taps M5 × 0.8 ISO2X PD5.0KBDCB 4.5P 70 14 25 39 6 4.9 8 3 1 ● M6 × 1 ISO2X PD6.0MBDCB 4.5P 80 15 30 45 6 4.9 8 3 1 ● M8 × 1.25 ISO2X PD8.0NBDCB 4.5P 90 19 35 47 8 6.2 9 3 2 ● M8 × 1 ISO2X PM8.0MBDCB 4.5P 90 19 - 46 6 4.9 8 3 3 ● Thread Mills M10 × 1.5 ISO2X PD010OBDCB 4.5P 100 23 39 52 10 8 11 3 2 ● M10 × 1.25 ISO2X PM010NBDCB 4.5P 100 23 - 51 7 5.5 8 3 3 ● M10 × 1 ISO2X PM010MBDCB 4.5P 90 19 - 46 7 5.5 8 3 3 ● M12 × 1.75 ISO2X PG012PBDCB 4.5P 110 26 - 56 9 7 10 3 3 ● M12 × 1.5 ISO2X PM012OBDCB 4.5P 100 21 - 51 9 7 10 3 3 ● Dies M12 × 1.25 ISO2X PM012NBDCB 4.5P 100 21 - 51 9 7 10 3 3 ● M14 × 2 ISO2X PG014QBDCB 4.5P 110 26 - 56 11 9 12 3 3 ● M14 × 1.5 ISO2X PM014OBDCB 4.5P 100 21 - 51 11 9 12 3 3 ● M16 × 2 ISO2X PG016QBDCB 4.5P 110 26 - 56 12 9 12 3 3 ● Center Drills M16 × 1.5 ISO2X PM016OBDCB 4.5P 100 21 - 51 12 9 12 3 3 ● M18 × 2.5 ISO2X PG018RBDCB 4.5P 125 33 - 64 14 11 14 3 3 ● M18 × 1.5 ISO2X PM018OBDCB 4.5P 110 24 - 56 14 11 14 3 3 M20 × 2.5 ISO2X PG020RBDCB 4.5P 140 33 - 71 16 12 15 3 3 ● Centering Tools M20 × 1.5 ISO2X PM020OBDCB 4.5P 125 24 - 64 16 12 15 3 3 M22 × 2.5 ISO2X PG022RBDCB 4.5P 140 33 - 71 18 14.5 17 3 3 M24 × 3 ISO2X PG024SBDCB 4.5P 160 37 - 82 18 14.5 17 3 3 ● DIN PO-13 126