Center Drills/Centering Tools Drill Shank Overall Cut Rmax Rmin dia. dia. length length (mm) (mm) Dc Ds L ℓ - - Spiral Fluted Taps (for blind hole) CD-R Low Helix Center Drills-Type R Spiral Fluted Taps (for through hole) Specification For icon explanation, refer to P.50 Spiral Pointed Taps (for through hole) TYPE:1 Hand Taps Cemented Carbide Taps Segment:51 Size Code Ds L ℓ Rmax Type Stock Dc ×θ× Ds (mm) (mm) (mm) (mm) 0.7 × R × 3.5 CY0.7R 3.5 35 2.5 2.4 1 △ 0.8 × R × 3.5 CY0.8R 3.5 35 2.6 2.4 1 △ Roll Taps 1×R×4 CY1.0R 4 35 3.25 2.9 1 △ 1.5 × R × 5 CY1.5R 5 40 4.6 4.6 1 ○ 2×R×6 CY2.0R 6 45 5.75 5.8 1 ○ 2.5 × R × 7.7 CY2.5R 7.7 50 7.3 7.4 1 ○ Special Thread Taps Simple Inspection Tools 3 × R × 7.7 CY3.0R 7.7 55 8.3 9.3 1 ○ 4 × R × 10 CY4.0R 10 65 10.6 11.5 1 ○ 5 × R × 11 CY5.0R 11 78 12.4 14.7 1 △ 6 × R × 16 CY6.0R-16 16 90 16.9 18.5 1 △ 6 × R × 18 CY6.0R 18 90 17.8 18.5 1 △ Pipe Taps Thread Mills Dies Center Drills Centering Tools JIS CE-23 ◎=Standard ○=Semi standard △=Made to order 662 For improvement, spec may change without advance notice.