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 LH (for blind hole) Spiral Fluted Taps Hand 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 TYPE:4 TYPE:5 Simple Inspection Tools Special Thread Taps Pipe Taps TYPE:6 TYPE:7 Thread Mills Dies Segment:1A 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 TNMP1.0B5-L 5P Center Drills M1 × 0.25 P1 36 4.5 - 24 3 2.5 5 3 1 △ TNMP1.0B1-L 1.5P TNMP1.2B5-L 5P M1.2 × 0.25 P1 36 4.5 - 24 3 2.5 5 3 1 △ TNMP1.2B1-L 1.5P TNMP1.4C5-L 5P Centering Tools M1.4 × 0.3 P1 36 5.4 - 24 3 2.5 5 3 1 △ TNMP1.4C1-L 1.5P TNMQ1.6D5-L 5P M1.6 × 0.35 P2 36 6.3 - 24 3 2.5 5 3 2 △ TNMQ1.6D1-L 1.5P JIS ◎=Standard ○=Semi standard △=Made to order HT-18 For improvement, spec may change without advance notice. 443