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 SU+SP/SU-SP Spiral Fluted Taps for Stainless Steels 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 P3 SUMR022R ○ M22 × 2.5 P4 SUMS022R 2.5P 115 33 - 55 17 13 16 4 5 P5 SUMT022R △ P3 SUMR022O (for through hole) Spiral Fluted Taps M22 × 1.5 2.5P 115 33 - 55 17 13 16 4 5 △ P4 SUMS022O P3 SUMR024S ○ M24 × 3 P4 SUMS024S 2.5P 120 39 - 55 19 15 18 4 5 P5 SUMT024S △ P3 SUMR024O (for through hole) Spiral Pointed Taps M24 × 1.5 2.5P 120 39 - 55 19 15 18 4 5 △ P4 SUMS024O M27 × 3 P3 SUMR027S 2.5P 130 39 - 60 20 15 18 4 5 △ M27 × 1.5 P3 SUMR027O 2.5P 130 39 - 60 20 15 18 4 5 △ M30 × 3.5 P4 SUMS030T 2.5P 135 46 - 62 23 17 20 4 5 △ Hand Taps M30 × 1.5 P3 SUMR030O 2.5P 135 46 - 62 23 17 20 4 5 △ M33 × 3.5 P4 SUMS033T 2.5P 145 46 - 67 25 19 22 4 5 △ M36 × 4 P4 SUMS036U 2.5P 155 52 - 71 28 21 24 4 5 △ M39 × 4 P4 SUMS039U 2.5P 165 52 - 76 30 23 26 4 5 △ Carbide Taps Cemented M42 × 4.5 P4 SUMS042V 2.5P 175 59 - 81 32 26 30 4 5 △ M42 × 1.5 P3 SUMR042O 2.5P 175 27 - 81 32 26 30 4 6 △ M45 × 4.5 P4 SUMS045V 2.5P 180 59 - 83 35 26 30 4 5 △ For Unified Threads Roll Taps Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type Stock (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes No.2-56UNC P1 SUMPUN2E 2.5P 42 8.1 12 27 3 2.5 5 2 3 △ No.3-48UNC P1 SUMPUN3F 2.5P 46 8.1 14 29 3 2.5 5 2 3 △ No.4-40UNC P1 SUMPUN4H 2.5P 46 9 14 26 4 3.2 6 2 3 △ Simple Inspection Tools Special Thread Taps No.4-48UNF P1 SUMPUN4F 2.5P 46 9 14 26 4 3.2 6 2 3 △ No.5-40UNC P1 SUMPUN5H 2.5P 52 11 16 29 5 4 7 3 3 △ No.5-44UNF P1 SUMPUN5G 2.5P 52 11 16 29 5 4 7 3 3 △ No.6-32UNC P2 SUMQUN6J 2.5P 52 11 16 29 5 4 7 3 3 △ Pipe Taps No.6-40UNF P1 SUMPUN6H 2.5P 52 11 16 29 5 4 7 3 3 △ No.8-32UNC P2 SUMQUN8J 2.5P 60 13 21 33 5.5 4.5 7 3 3 △ No.8-36UNF P2 SUMQUN8I 2.5P 60 13 21 33 5.5 4.5 7 3 3 △ No.10-24UNC P2 SUMQUNAM 2.5P 60 13 22 33 5.5 4.5 7 3 3 △ No.10-32UNF P2 SUMQUNAJ 2.5P 60 13 22 33 5.5 4.5 7 3 3 △ Thread Mills 1/4-20UNC P2 SUMQU04N 2.5P 62 15 26 33 6 4.5 7 3 3 △ 1/4-28UNF P2 SUMQU04K 2.5P 62 15 26 33 6 4.5 7 3 3 △ 5/16-18UNC P2 SUMQU05O 2.5P 70 19 - 36 6.2 5 8 3 4 △ 5/16-24UNF P2 SUMQU05M 2.5P 70 19 - 36 6.2 5 8 3 4 △ Dies 3/8-16UNC P2 SUMQU06P 2.5P 75 23 - 38 7 5.5 8 3 4 △ 3/8-24UNF P2 SUMQU06M 2.5P 75 23 - 38 7 5.5 8 3 4 △ 7/16-14UNC P3 SUMRU07Q 2.5P 82 26 - 42 8.5 6.5 9 3 4 △ 7/16-20UNF P2 SUMQU07N 2.5P 82 26 - 42 8.5 6.5 9 3 4 △ Center Drills 1/2-13UNC P3 SUMRU08R 2.5P 88 26 - 45 10.5 8 11 3 4 △ 1/2-20UNF P2 SUMQU08N 2.5P 88 26 - 45 10.5 8 11 3 4 △ 5/8-11UNC P3 SUMRU10U 2.5P 95 26 - 48 12.5 10 13 3 4 △ 5/8-18UNF P2 SUMQU10O 2.5P 95 26 - 48 12.5 10 13 3 4 △ 3/4-10UNC P3 SUMRU12V 2.5P 105 33 - 50 15 12 15 4 5 △ Centering Tools 3/4-16UNF P3 SUMRU12P 2.5P 105 33 - 50 15 12 15 4 5 △ 7/8-9UNC P3 SUMRU14W 2.5P 115 33 - 55 17 13 16 4 5 △ 7/8-14UNF P3 SUMRU14Q 2.5P 115 33 - 55 17 13 16 4 5 △ JIS ◎=Standard ○=Semi standard △=Made to order SP-36 For improvement, spec may change without advance notice. 353