Cemented Carbide Tap Series N-CT LA Carbide Taps for Light Alloys Spiral Fluted Taps (for blind hole) Size Class Code Chamfer L ℓ ℓn Ds K ℓk No. of Type Stock (mm) (mm) (mm) (mm) (mm) (mm) flutes TCNR016O3A 3P P3 TCNR016O1A 1.5P M16 × 1.5 95 24 - 12.5 10 13 4 3 △ TCNS016O3A 3P Spiral Fluted Taps (for through hole) P4 TCNS016O1A 1.5P TCNS018R3A 3P M18 × 2.5 P4 100 35 - 14 11 14 4 3 △ TCNS018R1A 1.5P TCNS018O3A 3P M18 × 1.5 P4 95 24 - 14 11 14 4 3 △ Spiral Pointed Taps (for through hole) TCNS018O1A 1.5P TCNS020R3A 3P M20 × 2.5 P4 105 35 - 15 12 15 4 3 △ TCNS020R1A 1.5P TCNS020O3A 3P M20 × 1.5 P4 95 24 - 15 12 15 4 3 △ TCNS020O1A 1.5P Hand Taps Basic L ℓ ℓn Ds K ℓk No. of Size Class Code Chamfer major dia (mm) (mm) (mm) (mm) (mm) (mm) flutes Type Stock (mm) For Helical Coil Wire Screw Thread Inserts, for Metric Threads Cemented Carbide Taps TW3.0G1LWB5 5P STI M3 × 0.5 1b 3.65 52 13 - 5 4 7 3 1 △ TW3.0G1LWBA 1.5P TW4.0I1LWB5 5P STI M4 × 0.7 1b 4.909 60 16 - 5.5 4.5 7 3 1 △ TW4.0I1LWBA 1.5P Roll Taps TW5.0K1LWB5 5P STI M5 × 0.8 1b 6.039 62 19 - 6 4.5 7 3 2 △ TW5.0K1LWBA 1.5P TW6.0M1LWB5 5P STI M6 × 1 1b 7.299 65 19 - 6.2 5 8 4 3 △ TW6.0M1LWBA 1.5P TW8.0N1LWB5 5P Special Thread Taps Simple Inspection Tools STI M8 × 1.25 1b 9.624 75 24 - 7 5.5 8 4 3 △ TW8.0N1LWBA 1.5P TW010O1LWB5 5P STI M10 × 1.5 1b 11.948 82 30 - 8.5 6.5 9 4 3 △ TW010O1LWBA 1.5P Pipe Taps Thread Mills Dies Center Drills Centering Tools JIS CT-3 ◎=Standard ○=Semi standard △=Made to order 480 For improvement, spec may change without advance notice.