Hand Tap Series Spiral Fluted Taps (for blind hole) EH-HT Hand Taps for Hard-to-Machine Materials Spiral Fluted Taps (for through hole) Specification ■EH-HT is the hand tap suitable for hard steels of 35- 45HRC, such as forgings and thermal refined steels of high carbon steels and alloy steels, and die steels. Spiral Pointed Taps (for through hole) Recommended Tapping Speeds depending on Materials Thermal re ned steels Tool steels 〜5 〜5 TYPE:1 35~45HRC Hand Taps For icon explanation, refer to P.50 Cemented Carbide Taps TYPE:2 TYPE:3 Roll Taps Segment:1B Special Thread Taps Simple Inspection Tools 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 ETHMR3.0G5 5P M3 × 0.5 P3 46 9 14 26 4 3.2 6 3 1 ○ ETHMR3.0G1 2.5P Pipe Taps ETHMR4.0I5 5P M4 × 0.7 P3 52 11 17 29 5 4 7 3 1 ○ ETHMR4.0I1 2.5P ETHMR5.0K5 5P M5 × 0.8 P3 60 13 22 33 5.5 4.5 7 3 1 ○ ETHMR5.0K1 2.5P ETHMR6.0M5 5P Thread Mills M6 × 1 P3 62 15 26 33 6 4.5 7 3 1 ○ ETHMR6.0M1 2.5P ETHMS8.0N5 5P M8 × 1.25 P4 70 19 - 36 6.2 5 8 4 2 ○ ETHMS8.0N1 2.5P ETHMS010O5 5P Dies M10 × 1.5 P4 75 23 - 38 7 5.5 8 4 2 ○ ETHMS010O1 2.5P ETHMS010N5 5P M10 × 1.25 P4 75 23 - 38 7 5.5 8 4 2 △ ETHMS010N1 2.5P ETHMS012P5 5P M12 × 1.75 P4 82 26 - 42 8.5 6.5 9 4 2 ○ Center Drills ETHMS012P1 2.5P ETHMS012O5 5P M12 × 1.5 P4 82 26 - 42 8.5 6.5 9 4 2 △ ETHMS012O1 2.5P ETHMS012N5 5P M12 × 1.25 P4 82 26 - 42 8.5 6.5 9 4 2 △ ETHMS012N1 2.5P Centering Tools ETHMT014Q5 5P M14 × 2 P5 88 26 - 45 10.5 8 11 4 2 △ ETHMT014Q1 2.5P ETHMS014O5 5P M14 × 1.5 P4 88 26 - 45 10.5 8 11 4 2 △ ETHMS014O1 2.5P JIS HT-49 ◎=Standard ○=Semi standard △=Made to order 474 For improvement, spec may change without advance notice.