Spiral Fluted Tap Overall Thread Thread+Neck Shank Shank Size of Length of length length length length dia. square square L ℓ ℓn ℓs Ds K ℓk Spiral Fluted Taps (for blind hole) AU+SP Plus Series Spiral Fluted Taps,Coated Spiral Fluted Taps (for through hole) Specification ■For wide range of materials. E Coating Spiral Pointed Taps (for through hole) Recommended Tapping Speed depending on Materials ow carbon steels Medium carbon steels High carbon steels Alloy steels 10〜20 10〜20 10〜20 10〜20 TYPE:1 Hand Taps Stainless steels Aluminum alloy castings inc alloy castings 5〜10 20〜30 20〜30 (m/min) (m/min) For icon explanation, refer to P.50 Cemented Carbide Taps TYPE:2 TYPE:3 Roll Taps Segment:1C Pipe Taps Simple Inspection Tools Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type (inch) (inch) (inch) (inch) (inch) (inch) (inch) flutes For Metric threads M3 × 0.5 D3 ST3.0G3NEV 2.5P 2.205 0.433 0.768 1.358 0.141 0.11 0.187 3 1 M4 × 0.7 D4 ST4.0I4NEV 2.5P 2.48 0.512 0.827 1.535 0.168 0.131 0.25 3 1 M5 × 0.8 D4 ST5.0K4NEV 2.5P 3.15 0.591 0.984 1.929 0.22 0.165 0.281 3 1 M6 × 1 D5 ST6.0M5NEV 2.5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 1 M8 × 1.25 D5 ST8.0N5NEV 2.5P 3.543 0.748 1.382 1.831 0.318 0.238 0.375 3 2 M8 × 1 D5 ST8.0M5NEV 2.5P 3.543 0.748 1.382 1.831 0.318 0.238 0.375 3 2 Thread Mills M10 × 1.5 D6 ST010O6NEV 2.5P 3.937 0.906 - 2.008 0.323 0.242 0.406 3 3 M10 × 1.25 D5 ST010N5NEV 2.5P 3.937 0.906 - 2.008 0.323 0.242 0.406 3 3 M10 × 1 D5 ST010M5NEV 2.5P 3.937 0.906 - 2.008 0.323 0.242 0.406 3 3 M12 × 1.75 D6 ST012P6NEV 2.5P 4.331 1.024 - 2.205 0.367 0.275 0.437 3 3 M12 × 1.5 D6 ST012O6NEV 2.5P 4.331 1.024 - 2.205 0.367 0.275 0.437 3 3 Dies M12 × 1.25 D5 ST012N5NEV 2.5P 4.331 1.024 - 2.205 0.367 0.275 0.437 3 3 Center Drills Centering Tools ANSI SP-11 198