Spiral Fluted Tap SP OX Spiral Fluted Taps,Oxided Spiral Fluted Taps (for blind hole) Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type (inch) (inch) (inch) (inch) (inch) (inch) (inch) flutes GH1 SSUN6H1NEX No.6-40UNF 2.5P 2.205 0.433 0.768 1.358 0.141 0.11 0.187 3 2 GH2 SSUN6H2NEX GH2 SSUN8J2NEX Spiral Fluted Taps (for through hole) No.8-32UNC 2.5P 2.48 0.512 0.827 1.535 0.168 0.131 0.25 3 2 GH3 SSUN8J3NEX GH2 SSUN8I2NEX No.8-36UNF 2.5P 2.48 0.512 0.827 1.535 0.168 0.131 0.25 3 2 GH3 SSUN8I3NEX GH2 SSUNAM2NEX No.10-24UNC 2.5P 2.756 0.551 0.984 1.654 0.194 0.152 0.25 3 2 Spiral Pointed Taps (for through hole) GH3 SSUNAM3NEX GH2 SSUNAJ2NEX No.10-32UNF 2.5P 2.756 0.551 0.984 1.654 0.194 0.152 0.25 3 2 GH3 SSUNAJ3NEX GH2 SSUNCM2NEX No.12-24UNC 2.5P 3.15 0.591 0.984 1.929 0.22 0.165 0.281 3 2 GH3 SSUNCM3NEX Hand Taps GH2 SSUNCK2NEX No.12-28UNF 2.5P 3.15 0.591 0.984 1.929 0.22 0.165 0.281 3 2 GH3 SSUNCK3NEX GH2 SSU04N2NEX GH3 SSU04N3NEX Cemented Carbide Taps 1/4-20UNC 2.5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 2 GH5 SSU04N5NEX GH11 SSU04N-EEX GH2 SSU04K2NEX GH3 SSU04K3NEX 1/4-28UNF 2.5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 2 Roll Taps GH4 SSU04K4NEX GH11 SSU04K-EEX GH2 SSU05O2NEX GH3 SSU05O3NEX 5/16-18UNC 2.5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 3 3 GH5 SSU05O5NEX Pipe Taps Simple Inspection Tools GH11 SSU05O-EEX GH2 SSU05M2NEX GH3 SSU05M3NEX 5/16-24UNF GH4 SSU05M4NEX 2.5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 3 3 GH5 SSU05M5NEX GH11 SSU05M-EEX GH3 SSU06P3NEX GH4 SSU06P4NEX 3/8-16UNC 2.5P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 3 3 Thread Mills GH5 SSU06P5NEX GH11 SSU06P-EEX GH2 SSU06M2NEX GH3 SSU06M3NEX 3/8-24UNF 2.5P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 3 3 Dies GH4 SSU06M4NEX GH11 SSU06M-EEX GH3 SSU07Q3NEX 7/16-14UNC GH4 SSU07Q4NEX 2.5P 3.937 0.906 - 2.008 0.323 0.242 0.406 3 4 GH5 SSU07Q5NEX Center Drills GH2 SSU07N2NEX 7/16-20UNF GH3 SSU07N3NEX 2.5P 3.937 0.906 - 2.008 0.323 0.242 0.406 3 4 GH5 SSU07N5NEX GH3 SSU08R3NEX Centering Tools GH4 SSU08R4NEX 1/2-13UNC 2.5P 4.331 1.024 - 2.205 0.367 0.275 0.437 3 4 GH5 SSU08R5NEX GH11 SSU08R-EEX GH2 SSU08N2NEX 1/2-20UNF 2.5P 4.331 1.024 - 2.205 0.367 0.275 0.437 3 4 GH3 SSU08N3NEX ANSI SP-7 194