Spiral Pointed 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 PO Spiral Pointed Taps 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 PSUN5G1NEB NO.5-44UNF GH2 PSUN5G2NEB 5P 2.205 0.433 0.768 1.358 0.141 0.11 0.187 2 2 GH3 PSUN5G3NEB Spiral Fluted Taps (for through hole) GH2 PSUN6J2NEB No.6-32UNC 5P 2.205 0.433 0.768 1.358 0.141 0.11 0.187 2 2 GH3 PSUN6J3NEB GH2 PSUN6H2NEB No.6-40UNF 5P 2.205 0.433 0.768 1.358 0.141 0.11 0.187 2 2 GH3 PSUN6H3NEB Spiral Pointed Taps (for through hole) GH2 PSUN8J2NEB No.8-32UNC 5P 2.48 0.512 0.827 1.535 0.168 0.131 0.25 2 2 GH3 PSUN8J3NEB GH2 PSUN8I2NEB NO.8-36UNF 5P 2.48 0.512 0.827 1.535 0.168 0.131 0.25 2 2 GH3 PSUN8I3NEB GH2 PSUNAM2NEB Hand Taps No.10-24UNC 5P 2.756 0.551 0.984 1.654 0.194 0.152 0.25 2 2 GH3 PSUNAM3NEB GH2 PSUNAJ2NEB No.10-32UNF 5P 2.756 0.551 0.984 1.654 0.194 0.152 0.25 2 2 GH3 PSUNAJ3NEB GH2 PSUNCM2NEB Cemented Carbide Taps NO.12-24UNC 5P 3.15 0.591 0.984 1.929 0.220 0.165 0.281 2 2 GH3 PSUNCM3NEB GH2 PSUNCK2NEB NO.12-28UNF 5P 3.15 0.591 0.984 1.929 0.220 0.165 0.281 2 2 GH3 PSUNCK3NEB GH3 PSU04N3NEB Roll Taps 1/4-20UNC GH4 PSU04N4NEB 4.5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 2 GH5 PSU04N5NEB GH2 PSU04K2NEB 1/4-28UNF GH3 PSU04K3NEB 4.5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 2 GH4 PSU04K4NEB Pipe Taps Simple Inspection Tools GH3 PSU05O3NEB 5/16-18UNC GH4 PSU05O4NEB 4.5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 3 3 GH5 PSU05O5NEB GH3 PSU05M3NEB 5/16-24UNF 4.5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 3 3 GH4 PSU05M4NEB GH3 PSU06P3NEB 3/8-16UNC 4.5P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 3 3 GH5 PSU06P5NEB GH3 PSU06M3NEB 3/8-24UNF 4.5P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 3 3 Thread Mills GH4 PSU06M4NEB GH4 PSU07Q4NEB 7/16-14UNC 4.5P 3.937 0.906 - 2.008 0.323 0.242 0.406 3 4 GH5 PSU07Q5NEB GH3 PSU07N3NEB Dies 7/16-20UNF GH4 PSU07N4NEB 4.5P 3.937 0.906 - 2.008 0.323 0.242 0.406 3 4 GH5 PSU07N5NEB GH3 PSU08R3NEB 1/2-13UNC GH4 PSU08R4NEB 4.5P 4.331 1.024 - 2.205 0.367 0.275 0.437 3 4 GH5 PSU08R5NEB Center Drills GH3 PSU08N3NEB 1/2-20UNF GH4 PSU08N4NEB 4.5P 4.331 1.024 - 2.205 0.367 0.275 0.437 3 4 GH5 PSU08N5NEB GH3 PSU09S3NEB Centering Tools 9/16-12UNC GH4 PSU09S4NEB 4.5P 4.331 1.024 - 2.205 0.429 0.322 0.5 3 4 GH5 PSU09S5NEB GH3 PSU09O3NEB 9/16-18UNF GH4 PSU09O4NEB 4.5P 4.331 1.024 - 2.205 0.429 0.322 0.5 3 4 GH5 PSU09O5NEB ANSI PO-3 230