Cemented Carbide Tap Series Spiral Fluted Taps (for blind hole) EH-CT Carbide Taps for Hard Materials Spiral Fluted Taps (for through hole) Specification Coating 1.5D Spiral Pointed Taps (for through hole) Recommended Tapping Speeds depending on Materials Thermal re ned steels 〜5 TYPE:1 45~55HRC Hand Taps For icon explanation, refer to P.50 Cemented Carbide Taps TYPE:2 TYPE:3 Roll Taps Segment:1L Special Thread Taps Simple Inspection Tools Size Class Code Chamfer L ℓ ℓn Ds K ℓk No. of Type Stock (mm) (mm) (mm) (mm) (mm) (mm) flutes For Metric Threads M3 × 0.5 P3 EHCR3.0G5 5P 46 11 - 4 3.2 6 4 1 ○ M4 × 0.7 P3 EHCR4.0I5 5P 52 13 - 5 4 7 4 1 ○ Pipe Taps M5 × 0.8 P3 EHCR5.0K5 5P 60 16 - 5.5 4.5 7 4 1 ○ M6 × 1 P3 EHCR6.0M5 5P 62 19 - 6 4.5 7 5 2 ○ M8 × 1.25 P4 EHCS8.0N5 5P 70 22 - 6.2 5 8 5 3 ○ M10 × 1.5 P4 EHCS010O5 5P 75 24 - 7 5.5 8 5 3 ○ Thread Mills M12 × 1.75 P4 EHCS012P5 5P 82 30 - 8.5 6.5 9 5 3 ○ Dies Center Drills Centering Tools JIS CT-11 ◎=Standard ○=Semi standard △=Made to order 488 For improvement, spec may change without advance notice.