Overall Thread Thread+Neck Shank Shank Size of Length of length length length length dia. square square L ℓ ℓn ℓs Ds K ℓk N-CT FC Carbide Taps for Cast Irons Size Class Code Chamfer L ℓ ℓn Ds K ℓk No. of Type Stock (for blind hole) Spiral Fluted Taps (mm) (mm) (mm) (mm) (mm) (mm) flutes M12 × 1.5 P4 TCNS012O1 1.5P 82 24 - 8.5 6.5 9 4 4 △ TCNR012N3 3P P3 ○ TCNR012N1 1.5P M12 × 1.25 80 22 - 8.5 6.5 9 4 4 (for through hole) Spiral Fluted Taps TCNS012N3 3P P4 △ TCNS012N1 1.5P TCNR012M3 3P P3 TCNR012M1 1.5P M12 × 1 70 19 - 8.5 6.5 9 4 4 △ TCNS012M3 3P (for through hole) Spiral Pointed Taps P4 TCNS012M1 1.5P TCNR014Q3 3P P3 △ TCNR014Q1 1.5P M14 × 2 88 30 - 10.5 8 11 4 4 TCNS014Q3 3P P4 ○ Hand Taps TCNS014Q1 1.5P TCNR014O3 3P P3 ○ TCNR014O1 1.5P M14 × 1.5 88 24 - 10.5 8 11 4 4 TCNS014O3 3P P4 △ Carbide Taps Cemented TCNS014O1 1.5P TCNR014N3 3P P3 TCNR014N1 1.5P M14 × 1.25 88 22 - 10.5 8 11 4 4 △ TCNS014N3 3P P4 TCNS014N1 1.5P Roll Taps TCNR014M3 3P P3 TCNR014M1 1.5P M14 × 1 70 19 - 10.5 8 11 4 4 △ TCNS014M3 3P P4 TCNS014M1 1.5P TCNS016Q3 3P Simple Inspection Tools Special Thread Taps M16 × 2 P4 95 30 - 12.5 10 13 4 4 ○ TCNS016Q1 1.5P TCNR016O3 3P P3 △ TCNR016O1 1.5P M16 × 1.5 95 24 - 12.5 10 13 4 4 Pipe Taps TCNS016O3 3P P4 ○ TCNS016O1 1.5P TCNS016M3 3P M16 × 1 P4 75 19 - 12.5 10 13 4 4 ○ TCNS016M1 1.5P TCNS018R3 3P Thread Mills M18 × 2.5 P4 100 35 - 14 11 14 4 4 △ TCNS018R1 1.5P TCNS018O3 3P M18 × 1.5 P4 95 24 - 14 11 14 4 4 ○ TCNS018O1 1.5P TCNS020R3 3P Dies M20 × 2.5 P4 105 35 - 15 12 15 4 4 ○ TCNS020R1 1.5P TCNS020O3 3P M20 × 1.5 P4 95 24 - 15 12 15 4 4 ○ TCNS020O1 1.5P TCNS022R3 3P M22 × 2.5 P4 115 35 - 17 13 16 4 4 △ Center Drills TCNS022R1 1.5P TCNS022O3 3P M22 × 1.5 P4 95 24 - 17 13 16 4 4 △ TCNS022O1 1.5P TCNS024S3 3P M24 × 3 P4 120 35 - 19 15 18 4 4 △ TCNS024S1 1.5P Centering Tools TCNS024O3 3P M24 × 1.5 P4 95 24 - 19 15 18 4 4 △ TCNS024O1 1.5P JIS ◎=Standard ○=Semi standard △=Made to order CT-6 For improvement, spec may change without advance notice. 483