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 CPR-T (for blind hole) Spiral Fluted Taps Check Pins for Bored Holes in thread form tapping (Taper Type) Specification (for through hole) Spiral Fluted Taps ■One CPR-T enables simple checking of bored hole dia. (for thread forming taps, taper type).CPR-T is made from wear resistant HSS material is applicable for through hole and For icon explanation, refer to P.50 for blind hole having enough space in the bottom. TYPE:1 TYPE:2 (for through hole) Spiral Pointed Taps Hand Taps Segment:7C Size Code L ℓ d1 d2 ℓ1 ℓ2 Ds K ℓk Type Stock Carbide Taps Cemented (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) For Metric Threads M2 × 0.4 CPRT2.0E 42 7 1.79 1.84 1 6 3 2.5 5 1 ○ M2.5 × 0.45 CPRT2.5F 46 8 2.27 2.34 1.5 6.5 3 2.5 5 1 ○ M2.6 × 0.45 CPRT2.6F 46 8 2.37 2.44 1.5 6.5 3 2.5 5 1 ○ Roll Taps M3 × 0.5 CPRT3.0G 46 8.5 2.75 2.82 1.5 7 4 3.2 6 1 ○ M4 × 0.7 CPRT4.0I 52 10.5 3.65 3.72 2.25 8.25 5 4 7 1 ○ M5 × 0.8 CPRT5.0K 59.5 12.5 4.59 4.67 2.5 10 5.5 4.5 7 1 ○ M6 × 1 CPRT6.0M 61.5 16.5 5.49 5.59 3.75 12.75 6 4.5 7 1 ○ Simple Inspection Tools Special Thread Taps M8 × 1.25 CPRT8.0N 90 19.4 7.36 7.49 4.7 14.7 8 6 9 2 ○ M10 × 1.5 CPRT010O 100 23.4 9.22 9.34 6.7 16.7 10 8 11 2 ○ M10 × 1.25 CPRT010N 100 23.4 9.35 9.49 6.7 16.7 10 8 11 2 ○ M12 × 1.75 CPRT012P 110 27.4 11.09 11.23 7.7 19.7 12 9 12 2 ○ M12 × 1.5 CPRT012O 110 27.4 11.22 11.34 7.7 19.7 12 9 12 2 ○ Pipe Taps M12 × 1.25 CPRT012N 110 27.4 11.36 11.50 7.7 19.7 12 9 12 2 ○ For Unified Threads No.2-56UNC CPRTUN2E 46 8 1.96 2.04 1.5 6.5 3 2.5 5 1 ○ No.2-64UNF CPRTUN2D 46 8 1.98 2.06 1.5 6.5 3 2.5 5 1 ○ Thread Mills No.3-48UNC CPRTUN3F 46 8 2.25 2.35 1.5 6.5 3 2.5 5 1 ○ No.3-56UNF CPRTUN3E 46 8 2.29 2.37 1.5 6.5 3 2.5 5 1 ○ No.4-40UNC CPRTUN4H 46 8.5 2.54 2.64 1.5 7 4 3.2 6 1 ○ No.4-48UNF CPRTUN4F 46 8.5 2.59 2.68 1.5 7 4 3.2 6 1 ○ Dies No.5-40UNC CPRTUN5H 46 8.5 2.87 2.97 1.5 7 4 3.2 6 1 ○ No.5-44UNF CPRTUN5G 46 8.5 2.90 2.99 1.5 7 4 3.2 6 1 ○ No.6-32UNC CPRTUN6J 52 10.5 3.11 3.22 2.25 8.25 5 4 7 1 ○ No.6-40UNF CPRTUN6H 52 10.5 3.19 3.29 2.25 8.25 5 4 7 1 ○ Center Drills No.8-32UNC CPRTUN8J 52 10.5 3.78 3.89 2.25 8.25 5 4 7 1 ○ No.8-36UNF CPRTUN8I 52 10.5 3.81 3.91 2.25 8.25 5 4 7 1 ○ No.10-24UNC CPRTUNAM 59.5 12.5 4.30 4.44 2.5 10 5.5 4.5 7 1 ○ No.10-32UNF CPRTUNAJ 59.5 12.5 4.44 4.53 2.5 10 5.5 4.5 7 1 ○ No.12-24UNC CPRTUNCM 61.5 16.5 4.96 5.07 3.75 12.75 6 4.5 7 1 ○ Centering Tools No.12-28UNF CPRTUNCK 61.5 16.5 5.03 5.13 3.75 12.75 6 4.5 7 1 ○ 1/4-20UNC CPRTU04N 61.5 16.5 5.73 5.86 3.75 12.75 6 4.5 7 1 ○ 1/4-28UNF CPRTU04K 61.5 16.5 5.91 6.00 3.75 12.75 6 4.5 7 1 ○ JIS ◎=Standard ○=Semi standard △=Made to order ST-20 For improvement, spec may change without advance notice. 543