Overall Thread Thread+Neck Shank Shank Size of Length of length length length length dia. square square L ℓ ℓn ℓs Ds K ℓk ZEN-P Spiral Pointed Taps for Nickel Base Alloys Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk No. of Type Stock (for blind hole) Spiral Fluted Taps (mm) (mm) (mm) (mm) (mm) (mm) (mm) flutes NO.10-32UNF 2BX PDUNAJYJPW 4.5P 70 14 24 39 6 4.9 8 3 1 ● 1/4-20UNC 2BX PDU04NYJPW 4.5P 80 15 30 42 7 5.5 8 3 1 ● 1/4-28UNF 2BX PDU04KYJPW 4.5P 80 15 30 42 7 5.5 8 3 1 ● 5/16-18UNC 2BX PDU05OYJPW 4.5P 90 19 35 47 8 6.2 9 3 2 ● (for through hole) Spiral Fluted Taps 5/16-24UNF 2BX PMU05MYJPW 4.5P 90 19 - 46 6 4.9 8 3 3 ● 3/8-16UNC 2BX PDU06PYJPW 4.5P 100 23 39 54 9 7 10 3 2 ● 3/8-24UNF 2BX PMU06MYJPW 4.5P 100 23 - 51 7 5.5 8 3 3 ● 1/2-13UNC 2BX PGU08RYJPW 4.5P 110 26 - 56 9 7 10 3 3 ● (for through hole) Spiral Pointed Taps 1/2-20UNF 2BX PMU08NYJPW 4.5P 100 21 - 51 9 7 10 3 3 ● 5/8-11UNC 2BX PGU10UYJPW 4.5P 110 26 - 56 12 9 12 3 3 ● 5/8-18UNF 2BX PMU10OYJPW 4.5P 100 21 - 51 12 9 12 3 3 ● 3/4-10UNC 2BX PGU12VYJPW 4.5P 125 33 - 64 14 11 14 3 3 ● 3/4-16UNF 2BX PMU12PYJPW 4.5P 100 24 - 56 14 11 14 3 3 ● Hand Taps Carbide Taps Cemented Roll Taps Simple Inspection Tools Special Thread Taps Pipe Taps Thread Mills Dies Center Drills Centering Tools DIN PO-18 131