Thread Type	Imperial UK US
US Specifications	1-1/2-11-1/2NPT 1-1/4–11-1/2NPT 1-11-1/2NPT 1/2-14NPT 1/4-18NPT 1/8-27NPT 1/16-27NPT 1–11-1/2NPT 2–11-1/2NPT 3/4-14NPT 3/8-18NPT
Imperial Specifications	PT1-1/2-11 PT1-1/4-11 PT1-11 PT1/2-14 PT1/4-19 PT1/8-28 PT1/16-28 PT2-11 PT3/4-14 PT3/8-19 W1-11 W1-11.5 W1/2-14 W1/4-18 W1/4-19 W1/8-27 W1/8-28 W1/16-27 W1/16-28 W3/4-14 W3/8-18 W3/8-19
Number of teeth	2.5P
Number of teeth in the feeding part	2.5P 3P
Total length(mm)	55 62 65 80 85 95
Total length (mm)	54 55 59 62 65 67 75 80 85 87 95 96 100 105 110 120 150
Material	HSS HSS OX HSSE
brand	OSG TOOL YAMAWA
Surface treatment	Acidification Oxidation treatment none
Brand	OSG YAMAWA

Screw tap for oblique pipe

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