Cemented Carbide Tap Series Spiral Fluted Taps (for blind hole) N-CT LA Carbide Taps for Light Alloys Spiral Fluted Taps (for through hole) Specification ■N-CT LA is the carbide tap suitable for tapping aluminum castings (AC), aluminum die castings (ADC), and zinc diecastings (ZDC). For volume production. Spiral Pointed Taps (for through hole) Recommended Tapping Speeds depending on Materials Aluminum alloy castings inc alloy castings 10〜20 10〜20 TYPE:1 (m/min) (m/min) Hand Taps For icon explanation, refer to P.50 Cemented Carbide Taps TYPE:2 TYPE:3 Roll Taps Segment:1L Special Thread Taps Simple Inspection Tools Size Class Code Chamfer L ℓ ℓn Ds K ℓk No. of Type Stock (mm) (mm) (mm) (mm) (mm) (mm) flutes For Metric Threads TCNR1.4C3A 3P M1.4 × 0.3 P3 34 7 - 3 2.5 5 3 1 △ TCNR1.4C1A 1.5P Pipe Taps TCNR1.6D3A 3P M1.6 × 0.35 P3 36 8 - 3 2.5 5 3 1 △ TCNR1.6D1A 1.5P TCNR1.7D3A 3P M1.7 × 0.35 P3 36 8 - 3 2.5 5 3 1 △ TCNR1.7D1A 1.5P TCNR2.0E3A 3P Thread Mills M2 × 0.4 P3 40 8 - 3 2.5 5 3 1 ○ TCNR2.0E1A 1.5P TCNR2.2F3A 3P M2.2 × 0.45 P3 42 9.5 - 3 2.5 5 3 1 △ TCNR2.2F1A 1.5P TCNR2.3E3A 3P Dies M2.3 × 0.4 P3 42 8 - 3 2.5 5 3 1 △ TCNR2.3E1A 1.5P TCNR2.5F3A 3P M2.5 × 0.45 P3 44 9.5 - 3 2.5 5 3 1 △ TCNR2.5F1A 1.5P TCNR3.0G3A 3P M3 × 0.5 P3 46 11 - 4 3.2 6 3 1 ○ Center Drills TCNR3.0G1A 1.5P TCNR3.5H3A 3P M3.5 × 0.6 P3 48 11 - 4 3.2 6 3 1 △ TCNR3.5H1A 1.5P TCNR4.0I3A 3P M4 × 0.7 P3 52 13 - 5 4 7 3 1 ○ Centering Tools TCNR4.0I1A 1.5P TCNR4.0G3A 3P M4 × 0.5 P3 52 11 - 5 4 7 3 1 △ TCNR4.0G1A 1.5P JIS CT-1 ◎=Standard ○=Semi standard △=Made to order 478 For improvement, spec may change without advance notice.