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 TYPE:1 TYPE:2 (for blind hole) Spiral Fluted Taps (for through hole) Spiral Fluted Taps TYPE:3 TYPE:4 (for through hole) Spiral Pointed Taps Hand Taps TYPE:5 TYPE:6 Carbide Taps Cemented Oversize Roll Taps Segment:1C Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type Stock (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes For Metric Threads Simple Inspection Tools Special Thread Taps M1.4 × 0.3 P1 SUMP1.4C 2.5P 36 5.4 - 24 3 2.5 5 2 1 △ P1 SUMP1.7D M1.7 × 0.35 2.5P 36 6.3 - 24 3 2.5 5 2 2 △ P2 SUMQ1.7D P1 SUPP2.0E ◎ Pipe Taps M2 × 0.4 P2 SUPQ2.0E 2.5P 42 7.2 12 27 3 2.5 5 2 3 P3 SUPR2.0E △ P1 SUPP2.3E M2.3 × 0.4 P2 SUPQ2.3E 2.5P 42 7.2 12 27 3 2.5 5 2 3 △ P3 SUPR2.3E Thread Mills P1 SUPP2.5F ○ M2.5 × 0.45 P2 SUPQ2.5F 2.5P 46 8.1 14 29 3 2.5 5 2 3 P3 SUPR2.5F △ P1 SUPP2.6F ○ Dies M2.6 × 0.45 P2 SUPQ2.6F 2.5P 46 8.1 14 29 3 2.5 5 2 3 P3 SUPR2.6F △ P1 SUPP3.0G ◎ M3 × 0.5 P2 SUPQ3.0G 2.5P 46 9 14 26 4 3.2 6 3 3 Center Drills P3 SUPR3.0G △ 3M0.6 P1 SUPP3.0H 2.5P 46 9 14 26 4 3.2 6 3 3 △ P1 SUPP3.5H M3.5 × 0.6 2.5P 52 11 16 29 5 4 7 3 3 △ P3 SUPR3.5H P2 SUPQ4.0I ◎ Centering Tools M4 × 0.7 P3 SUPR4.0I 2.5P 52 11 17 29 5 4 7 3 3 P4 SUPS4.0I △ JIS ◎=Standard ○=Semi standard △=Made to order SP-34 For improvement, spec may change without advance notice. 351