JIS Spiral Fluted Taps (for blind hole)Spiral Fluted Taps(for through hole)Spiral Pointed Taps(for through hole)Hand TapsCementedCarbide TapsRoll TapsSpecial Thread TapsSimple Inspection ToolsPipe TapsThread MillsPremium Thread MillsDiesCenter DrillsCentering Tools Center Drills / Centering Tools Drill Shank Overall Drilldia.dia.lengthlengthDcDsLℓ⑪ JIS CD-R ① Low Helix Center Drills-Type R Specification ② ■The CD-R is a high helix type R center hole drill. ③ ④ TYPE:1 ⑤ Segment:51 SizeDc × R × Ds Code Dc (mm) Ds(mm) L (mm) ℓ(mm) Rmax(mm) TYPE MSRP ⑥ 0.7 × R × 3.5 CY0.7R 0.7 3.5 35 2.5 2.5 1 ¥3,130 ※ 0.8 × R × 3.5 CY0.8R 0.8 3.5 35 2.6 2.5 1 ¥2,670 ※ 1×R×4 CY1.0R 1 4 35 3.25 3.15 1 ¥2,350 ※ 1.5 × R × 5 CY1.5R2×R×6CY2.0R 1.5 5 40 4.6 5 1 ¥1,850 ⑦26455.756.31¥2,060 2.5 × R × 7.7 CY2.5R 2.5 7.7 50 7.3 8 1 ¥2,670 3 × R × 7.7 CY3.0R 3 7.7 55 8.3 10 1 ¥3,500 4 × R × 10 CY4.0R 4 10 65 10.6 12.5 1 ¥5,670 5 × R × 11 CY5.0R 5 11 78 12.4 16 1 ¥7,210 ※ ⑧ 6 × R × 16 CY6.0R-16 6 16 90 16.9 20 1 ¥10,900 ※ 6 × R × 18 CY6.0R 6 18 90 17.8 20 1 ¥15,300 ※ ⑨ ⑩ ⑪ JIS ※ = Specified Distribution Items. Made to order products. ⑪-32