Special Thread Taps / Simple Inspection Tools Overall Pin Bored hole dia. Bored hole dia. d1 d2 Shank Size of Length of length length (GO) (NOT-GO) length length dia. square square L ℓ d1 d2 ℓ1 ℓ2 Ds K ℓk Spiral Fluted Taps (for blind hole) CPC-T Check Pins for Bored Holes in thread cut tapping (Taper Type) Spiral Fluted Taps (for through hole) Specification ■One CPC-T enables simple checking of bored hole dia. (for cutting taps, taper type).CPC-T is made from wear resistant HSS material and is applicable for through hole For icon explanation, refer to P.50 and for blind hole having enough space in the bottom. Spiral Pointed Taps (for through hole) TYPE:1 TYPE:2 Hand Taps Segment:7C Cemented Carbide Taps Size Code L ℓ d1 d2 ℓ1 ℓ2 Ds K ℓk Type Stock (mm) (mm) (Thread engagement ratio) (Thread engagement ratio) (mm) (mm) (mm) (mm) (mm) For Metric Threads M2 × 0.4 CPCT2.0E 42 7 1.567 (100%) 1.679 (74%) 1 6 3 2.5 5 1 ○ M2.5 × 0.45 CPCT2.5F 46 8 2.013 (100%) 2.138 (74%) 1.5 6.5 3 2.5 5 1 ○ Roll Taps M3 × 0.5 CPCT3.0G 46 8.5 2.459 (100%) 2.599 (74%) 1.5 7 4 3.2 6 1 ○ M4 × 0.7 CPCT4.0I 52 10.5 3.242 (100%) 3.422 (76%) 2.25 8.25 5 4 7 1 ○ M5 × 0.8 CPCT5.0K 59.5 12.5 4.134 (100%) 4.334 (77%) 2.5 10 5.5 4.5 7 1 ○ M6 × 1 CPCT6.0M 61.5 16.5 4.917 (100%) 5.153 (78%) 3.75 12.75 6 4.5 7 1 ○ Special Thread Taps Simple Inspection Tools M8 × 1.25 CPCT8.0N 90 19.4 6.647 (100%) 6.912 (80%) 4.7 14.7 8 6 9 2 ○ M10 × 1.5 CPCT010O 100 23.4 8.376 (100%) 8.676 (82%) 6.7 16.7 10 8 11 2 ○ M12 × 1.75 CPCT012P 110 27.4 10.106 (100%) 10.441 (82%) 7.7 19.7 12 9 12 2 ○ Pipe Taps Thread Mills Dies Center Drills Centering Tools JIS ST-17 ◎=Standard ○=Semi standard △=Made to order 540 For improvement, spec may change without advance notice.