Overall Thread Thread+Neck Shank Shank Size of Length of length length length length dia. square square L ℓ ℓn ℓs Ds K ℓk HT Straight Fluted and Hand Tap Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type Stock (for blind hole) Spiral Fluted Taps (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes TG027SANEBC 2.5P 160 37 - 82 20 16 19 4 9 TQ027SANEB2 F 110 39 - 56 20 16 19 4 10 M27 × 3 ISO2 TQ027SANEBU M 110 39 - 56 20 16 19 4 10 TQ027SANEB5 V 110 39 - 56 20 16 19 4 10 (for through hole) Spiral Fluted Taps TM027QANEBC 2.5P 140 27 - 71 20 16 19 4 11 M27 × 2 ISO2 TR027QANEB2 F 90 21 - 46 20 16 19 4 10 TR027QANEB5 V 90 21 - 46 20 16 19 4 10 TR027OANEB2 F 90 21 - 46 20 16 19 4 10 (for through hole) Spiral Pointed Taps M27 × 1.5 ISO2 TR027OANEB5 V 90 21 - 46 20 16 19 4 10 TR028QANEB2 F 90 21 - 46 20 16 19 4 10 M28 × 2 ISO2 TR028QANEB5 V 90 21 - 46 20 16 19 4 10 TM028OANEBC 2.5P 140 27 - 71 20 16 19 4 11 M28 × 1.5 ISO2 TR028OANEB2 F 90 21 - 46 20 16 19 4 10 Fluted Taps Straight TR028OANEB5 V 90 21 - 46 20 16 19 4 10 TG030TANEBC 2.5P 180 44 - 92 22 18 21 4 9 TQ030TANEB2 F 125 46 - 64 22 18 21 4 10 M30 × 3.5 ISO2 Carbide Taps Cemented TQ030TANEBU M 125 46 - 64 22 18 21 4 10 TQ030TANEB5 V 125 46 - 64 22 18 21 4 10 TM030QANEBC 2.5P 150 27 - 77 22 18 21 4 11 M30 × 2 ISO2 TR030QANEB2 F 90 21 - 46 22 18 21 4 10 TR030QANEB5 V 90 21 - 46 22 18 21 4 10 Roll Taps TM030OANEBC 2.5P 150 27 - 77 22 18 21 4 11 M30 × 1.5 ISO2 TR030OANEB2 F 90 21 - 46 22 18 21 4 10 TR030OANEB5 V 90 21 - 46 22 18 21 4 10 TM030MANEBC 2.5P 150 27 - 77 22 18 21 4 11 M30 × 1 ISO2 TR030MANEB2 F 90 21 - 46 22 18 21 4 10 Simple Inspection Tools Special Thread Taps TR030MANEB5 V 90 21 - 46 22 18 21 4 10 TM032QANEBC 2.5P 150 27 - 77 22 18 21 4 11 M32 × 2 ISO2 TR032QANEB2 F 90 21 - 46 22 18 21 4 10 TR032QANEB5 V 90 21 - 46 22 18 21 4 10 Pipe Taps TM032OANEBC 2.5P 150 27 - 77 22 18 21 4 11 M32 × 1.5 ISO2 TR032OANEB2 F 90 21 - 46 22 18 21 4 10 TR032OANEB5 V 90 21 - 46 22 18 21 4 10 TG033TANEBC 2.5P 180 46 - 92 25 20 23 4 9 Thread Mills TQ033TANEB2 F 125 46 - 64 25 20 23 4 10 M33 × 3.5 ISO2 TQ033TANEBU M 125 46 - 64 25 20 23 4 10 TQ033TANEB5 V 125 46 - 64 25 20 23 4 10 TR033SANEB2 F 125 39 - 64 25 20 23 4 10 Dies M33 × 3 ISO2 TR033SANEB5 V 125 39 - 64 25 20 23 4 10 TM033QANEBC 2.5P 160 29 - 82 25 20 23 4 11 M33 × 2 ISO2 TR033QANEB2 F 100 24 - 51 25 20 23 4 10 TR033QANEB5 V 100 24 - 51 25 20 23 4 10 TM033OANEBC 2.5P 160 29 - 82 25 20 23 4 11 Center Drills M33 × 1.5 ISO2 TR033OANEB2 F 100 24 - 51 25 20 23 4 10 TR033OANEB5 V 100 24 - 51 25 20 23 4 10 TR034OANEB2 F 100 24 - 51 28 22 25 4 10 M34 × 1.5 ISO2 TR034OANEB5 V 100 24 - 51 28 22 25 4 10 Centering Tools TR035OANEB2 F 100 24 - 51 28 22 25 4 10 M35 × 1.5 ISO2 TR035OANEB5 V 100 24 - 51 28 22 25 4 10 DIN HT-6 139