Overall Chamfer+ Thread Thread+Neck Shank Shank Size of Length of length full thread length length length dia. square square L ℓt ℓ ℓn ℓs Ds K ℓk SP LH (for blind hole) Spiral Fluted Taps Spiral Fluted Taps for Left Hand Threads Specification (for through hole) Spiral Fluted Taps E Left hand ~ M2.6 M26 ~ Recommended Tapping Speeds depending on Materials (for through hole) Spiral Pointed Taps Medium carbon steels 5〜10 TYPE:1 For icon explanation, refer to P.50 Hand Taps TYPE:2 TYPE:3 Carbide Taps Cemented Roll Taps Segment:1C 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 M2 × 0.4 P1 SPP2.0E--L 2.5P 42 7.2 12 27 3 2.5 5 2 1 △ M2.3 × 0.4 P1 SPP2.3E--L 2.5P 42 7.2 12 27 3 2.5 5 2 1 △ M2.5 × 0.45 P1 SPP2.5F--L 2.5P 46 8.1 14 29 3 2.5 5 2 1 △ Pipe Taps M2.6 × 0.45 P1 SPP2.6F--L 2.5P 46 8.1 14 29 3 2.5 5 2 1 △ M3 × 0.5 P1 SPP3.0G--L 2.5P 46 9 14 26 4 3.2 6 3 1 ○ M4 × 0.7 P2 SPQ4.0I--L 2.5P 52 11 17 29 5 4 7 3 1 ○ M5 × 0.8 P2 SPQ5.0K--L 2.5P 60 13 22 33 5.5 4.5 7 3 1 ○ Thread Mills M6 × 1 P2 SPQ6.0M--L 2.5P 62 15 26 33 6 4.5 7 3 1 ○ M7 × 1 P2 SPQ7.0M--L 2.5P 70 19 - 36 6.2 5 8 3 2 △ M8 × 1.25 P2 SPQ8.0N--L 2.5P 70 19 - 36 6.2 5 8 3 2 ○ M8 × 1 P2 SPQ8.0M--L 2.5P 70 19 - 36 6.2 5 8 3 2 △ M10 × 1.5 P2 SPQ010O--L 2.5P 75 23 - 38 7 5.5 8 3 2 ○ Dies M10 × 1.25 P2 SPQ010N--L 2.5P 75 23 - 38 7 5.5 8 3 2 ○ M10 × 1 P2 SPQ010M--L 2.5P 75 23 - 38 7 5.5 8 3 2 △ M12 × 1.75 P2 SPQ012P--L 2.5P 82 26 - 42 8.5 6.5 9 3 2 ○ M12 × 1.5 P2 SPQ012O--L 2.5P 82 26 - 42 8.5 6.5 9 3 2 △ Center Drills M12 × 1.25 P2 SPQ012N--L 2.5P 82 26 - 42 8.5 6.5 9 3 2 △ M12 × 1 P2 SPQ012M--L 2.5P 82 26 - 42 8.5 6.5 9 3 2 △ M14 × 2 P2 SPQ014Q--L 2.5P 88 26 - 45 10.5 8 11 3 2 △ M14 × 1.5 P2 SPQ014O--L 2.5P 88 26 - 45 10.5 8 11 3 2 △ Centering Tools M16 × 2 P2 SPQ016Q--L 2.5P 95 26 - 48 12.5 10 13 3 2 ○ M16 × 1.5 P2 SPQ016O--L 2.5P 95 26 - 48 12.5 10 13 3 2 △ M18 × 2.5 P3 SPR018R--L 2.5P 100 33 - 51 14 11 14 4 2 △ JIS ◎=Standard ○=Semi standard △=Made to order SP-20 For improvement, spec may change without advance notice. 337