Drill Shank Maximum Overall Drill dia. dia. dia. length length Dc Ds D1 L ℓ CESB (for blind hole) Spiral Fluted Taps High Helix Center Drills-JIS Type B 60° Specification (for through hole) Spiral Fluted Taps For icon explanation, refer to P.50 TYPE:1 (for through hole) Spiral Pointed Taps 120 Hand Taps Segment:51 Carbide Taps Cemented Size Code Ds D1 L ℓ Type Stock Dc ×θ× Ds (mm) (mm) (mm) (mm) 0.5 × 60゜× 3.15 CEB0.5 3.15 1.06 31.5 0.8 1 ◎ 0.63 × 60゜× 3.15 CEB0.63 3.15 1.32 31.5 1 1 ◎ 0.8 × 60゜× 3.15 CEB0.8 3.15 1.7 31.5 1.2 1 ◎ Roll Taps 1 × 60゜× 4 CEB1.0 4 2.12 35.5 1.5 1 ◎ 1.25 × 60゜× 5 CEB1.25 5 2.65 40 1.9 1 ◎ 1.6 × 60゜× 6.3 CEB1.6 6.3 3.35 45 2.4 1 ◎ 2 × 60゜× 8 CEB2.0 8 4.25 50 3 1 ◎ Simple Inspection Tools Special Thread Taps 2.5 × 60゜× 10 CEB2.5 10 5.3 56 3.8 1 ◎ 3.15 × 60゜× 11.2 CEB3.15 11.2 6.7 60 4.8 1 ◎ 4 × 60゜× 14 CEB4.0 14 8.5 67 6 1 ◎ 5 × 60゜× 18 CEB5.0 18 10.6 75 7.5 1 ◎ 6.3 × 60゜× 20 CEB6.3 20 13.2 80 9.2 1 ◎ Pipe Taps 8 × 60゜× 25 CEB8.0 25 17 100 11.5 1 ◎ 10 × 60゜× 31.5 CEB010 31.5 21.2 125 14.2 1 ◎ Thread Mills Dies Center Drills Centering Tools JIS ◎=Standard ○=Semi standard △=Made to order CE-24 For improvement, spec may change without advance notice. 663