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 JIS ⑪ Center Drills / Centering Tools Drill Shank Overall Drilldia.dia.lengthlengthDcDsLℓ JIS ① CD-Q Low Helix Center Drills-Type A 90° ② Specification ■Low helix center drills - Type A center drill for machining 90°center hole. Suitable for relatively hard materials. ③ ④ TYPE:1 ⑤ Segment:51 ⑥ SizeDc ×θ× Ds Code Dc (mm) Ds(mm) L (mm) ℓ (mm) TYPE MSRP 0.5 × 90゜× 3.5 CY0.5Q 0.5 3.5 35 0.5 1 ¥3,340 ※ 0.6 × 90゜× 3.5 CY0.6Q 0.6 3.5 35 0.6 1 ¥3,020 ※ 0.8 × 90゜× 3.5 CY0.8Q 0.8 3.5 35 0.8 1 ¥2,290 ※ ⑦ 1 × 90゜× 4 CY1.0Q1.2 × 90゜× 5CY1.2Q 1 4 35 1 1 ¥1,8801.25401.21¥1,720 ※ 1.5 × 90゜× 5 CY1.5Q 1.5 5 40 1.5 1 ¥1,480 2 × 90゜× 6 CY2.0Q 2 6 45 2 1 ¥1,650 2.5 × 90゜× 7.7 CY2.5Q 2.5 7.7 50 2.5 1 ¥2,000 ⑧ 3 × 90゜× 7.7 CY3.0Q 3 7.7 55 3 1 ¥2,000 4 × 90゜× 10 CY4.0Q 4 10 65 4.5 1 ¥4,010 5 × 90゜× 11 CY5.0Q 5 11 78 5.5 1 ¥4,330 6 × 90゜× 16 CY6.0Q-16 6 16 90 6.5 1 ¥10,400 ※ 6 × 90゜× 18 CY6.0Q 6 18 90 6.5 1 ¥14,700 ※ ⑨ ⑩ ⑪ JIS ⑪-19 ※ = Specified Distribution Items. Made to order products.