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 OX Spiral Pointed 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 9/16-18UNF GH5 PSU09O5NEX 4.5P 4.331 1.024 - 2.205 0.429 0.322 0.5 3 4 GH3 PSU10U3NEX GH4 PSU10U4NEX Spiral Fluted Taps (for through hole) 5/8-11UNC 4.5P 4.331 1.024 - 2.205 0.480 0.36 0.562 3 4 GH5 PSU10U5NEX GH6 PSU10U6NEX GH3 PSU10O3NEX 5/8-18UNF GH4 PSU10O4NEX 4.5P 4.331 1.024 - 2.205 0.480 0.36 0.562 3 4 Spiral Pointed Taps (for through hole) GH5 PSU10O5NEX GH5 PSU12V5NEX 3/4-10UNC 4.5P 4.921 1.299 - 2.52 0.590 0.442 0.687 3 4 GH6 PSU12V6NEX GH3 PSU12P3NEX 3/4-16UNF GH4 PSU12P4NEX 4.5P 4.921 1.299 - 2.52 0.590 0.442 0.687 3 4 Hand Taps GH5 PSU12P5NEX GH4 PSU14W4NEX 7/8-9UNC GH5 PSU14W5NEX 4.5P 5.512 1.299 - 2.795 0.697 0.523 0.75 3 4 GH6 PSU14W6NEX Cemented Carbide Taps GH4 PSU14Q4NEX 7/8-14UNF 4.5P 5.512 1.299 - 2.795 0.697 0.523 0.75 3 4 GH6 PSU14Q6NEX GH4 PSU16X4NEX GH5 PSU16X5NEX 1-8UNC 4.5P 6.299 1.457 - 3.228 0.800 0.6 0.812 3 4 Roll Taps GH6 PSU16X6NEX GH7 PSU16X7NEX GH4 PSU16S4NEX 1-12UNF GH5 PSU16S5NEX 4.5P 6.299 1.457 - 3.228 0.800 0.6 0.812 3 4 GH6 PSU16S6NEX Pipe Taps Simple Inspection Tools GH6 PSU18Y6NEX 1 1/8-7UNC 4.5P 7.087 1.732 - 3.622 0.896 0.672 0.875 4 4 GH7 PSU18Y7NEX GH5 PSU18S5NEX 1 1/8-12UNF 4.5P 7.087 1.732 - 3.622 0.896 0.672 0.875 4 4 GH6 PSU18S6NEX GH6 PSU20Y6NEX 1 1/4-7UNC 4.5P 7.087 1.929 - 3.622 1.021 0.766 1 4 4 GH8 PSU20Y8NEX GH5 PSU20S5NEX 1 1/4-12UNF 4.5P 7.087 1.929 - 3.622 1.021 0.766 1 4 4 GH6 PSU20S6NEX Thread Mills GH6 PSU22Z6NEX 1 3/8-6UNC 4.5P 7.874 2.165 - 4.016 1.108 0.831 1.062 4 4 GH8 PSU22Z8NEX GH5 PSU22S5NEX 1 3/8-12UNF 4.5P 7.874 2.165 - 4.016 1.108 0.831 1.062 4 4 GH6 PSU22S6NEX Dies GH6 PSU24Z6NEX 1 1/2-6UNC 4.5P 7.874 2.323 - 4.016 1.233 0.925 1.125 4 4 GH8 PSU24Z8NEX GH5 PSU24S5NEX 1 1/2-12UNF 4.5P 7.874 2.323 - 4.016 1.233 0.925 1.125 4 4 GH7 PSU24S7NEX Center Drills Centering Tools ANSI PO-7 234