Overall Thread Thread+Neck Shank Shank Size of Length of length length length length dia. square square L ℓ ℓn ℓs Ds K ℓk EH-PO (for blind hole) Spiral Fluted Taps Spiral Pointed Taps for Hard-to-Machine Materials Specification (for through hole) Spiral Fluted Taps ■Spiral pointed tap suitable for high hardness steels of 35 ~ 45HRC such as forgings and thermal refined steels of high carbon steels and alloy steels, and die steels. Through hole use. Recommended Tapping Speeds depending on Materials (for through hole) Spiral Pointed Taps Thermal re ned steels 〜5 TYPE:1 35~45HRC For icon explanation, refer to P.50 Hand Taps TYPE:2 TYPE:3 Carbide Taps Cemented Roll Taps Segment:1F Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type Stock Simple Inspection Tools Special Thread Taps (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes For Metric Threads M3 × 0.5 P3 EPHMR3.0G 4.5P 46 9 14 26 4 3.2 6 3 1 ○ M4 × 0.7 P3 EPHMR4.0I 4.5P 52 11 17 29 5 4 7 3 1 ○ M5 × 0.8 P3 EPHMR5.0K 4.5P 60 13 22 33 5.5 4.5 7 3 1 ○ Pipe Taps M6 × 1 P3 EPHMR6.0M 4.5P 62 15 26 33 6 4.5 7 3 1 ○ M8 × 1.25 P4 EPHMS8.0N 4.5P 70 19 - 36 6.2 5 8 3 2 ○ M10 × 1.5 P4 EPHMS010O 4.5P 75 23 - 38 7 5.5 8 3 2 ○ M10 × 1.25 P4 EPHMS010N 4.5P 75 23 - 38 7 5.5 8 3 2 ○ Thread Mills M12 × 1.75 P4 EPHMS012P 4.5P 82 26 - 42 8.5 6.5 9 3 2 ○ M12 × 1.5 P4 EPHMS012O 4.5P 82 26 - 42 8.5 6.5 9 3 2 △ M12 × 1.25 P4 EPHMS012N 4.5P 82 26 - 42 8.5 6.5 9 3 2 △ M14 × 2 P5 EPHMT014Q 4.5P 88 26 - 45 10.5 8 11 3 2 △ Dies M14 × 1.5 P4 EPHMS014O 4.5P 88 26 - 45 10.5 8 11 3 2 ○ M16 × 2 P5 EPHMT016Q 4.5P 95 26 - 48 12.5 10 13 3 2 ○ M16 × 1.5 P4 EPHMS016O 4.5P 95 26 - 48 12.5 10 13 3 2 △ M18 × 2.5 P5 EPHMT018R 4.5P 100 33 - 51 14 11 14 3 2 △ M18 × 1.5 P4 EPHMS018O 4.5P 100 33 - 51 14 11 14 3 2 △ Center Drills M20 × 2.5 P5 EPHMT020R 4.5P 105 33 - 50 15 12 15 3 3 △ M20 × 1.5 P4 EPHMS020O 4.5P 105 33 - 50 15 12 15 3 3 △ M22 × 2.5 P5 EPHMT022R 4.5P 115 33 - 55 17 13 16 3 3 △ M22 × 1.5 P4 EPHMS022O 4.5P 115 33 - 55 17 13 16 3 3 △ Centering Tools M24 × 3 P5 EPHMT024S 4.5P 120 39 - 55 19 15 18 3 3 △ M24 × 1.5 P4 EPHMS024O 4.5P 120 39 - 55 19 15 18 3 3 △ JIS ◎=Standard ○=Semi standard △=Made to order PO-30 For improvement, spec may change without advance notice. 423