American Pipe Thread (NPT)

NPT Fitting Diagram

These fittings are normally available from stock and are supplied in 316 stainless steel, suitable to suit tubes 1mm to 15.8mm.

NPT Group

1/16″ NPT Fittings

NPT-1-16-angled
Part No. A to suit tube B C D
CF18311 1.0 mm 7.9 mm 11.1 mm 22.1 mm
CF18315 1.5 mm 14.2 mm 11.1 mm 25.4 mm
CF18312 2.0 mm 11.1 mm 11.1 mm 23.8 mm

1/8″ NPT Fittings

NPT-1-8-angled
Part No. A to suit tube B C D
CF1131.5 1.5 mm 7.9 mm 11.1 mm 22.1 mm
CF1133 3.0 mm 11.1 mm 11.1 mm 23.8 mm
CF1131/8 1/8" 11.1 mm 11.1 mm 23.8 mm
CF1134.5 4.5 mm 12.7 mm 11.1 mm 24.9 mm
CF1136 6.0 mm 14.2 mm 11.1 mm 25.4 mm
CF1131/4 1/4" 14.2 mm 11.1 mm 25.4 mm

1/4″ NPT Fittings

NPT-1-4-angled
Part No. A to suit tube B C D
CF1231.5 1.5 mm 8.0 mm 14.2 mm 28.0 mm
CF1232 2.0 mm 8.0 mm 14.2 mm 28.0 mm
CF1233 3.0 mm 11.1 mm 14.2 mm 28.9 mm
CF1234.5 4.5 mm 12.7 mm 14.2 mm 29.5 mm
CF1233/16 3/16" 12.7 mm 14.2 mm 29.5 mm
CF1236 6.0 mm 14.2 mm 14.2 mm 30.7 mm
CF1231/4 1/4" 14.2 mm 14.2 mm 30.7 mm

1/2″ NPT Fittings

NPT-1-2-angled
Part No. A to suit tube B C D
CF1333 3.0 mm 11.1 mm 22.2 mm 35.5 mm
CF1334.5 4.5 mm 12.7 mm 22.2 mm 36.5 mm
CF1336 6.0 mm 14.2 mm 22.2 mm 37.3 mm
CF1331/4 1/4" 14.2 mm 22.2 mm 37.3 mm
CF1138 8.0 mm 15.8 mm 22.2 mm 38.2 mm
CF11310 10.0 mm 17.45 mm 22.2 mm 38.7 mm
CF131/2 1/2" 22.2 mm 22.2 mm 38.7 mm

3/4″ NPT Fittings

NPT-3-4-angled
Part No. A to suit tube B C D
CF1436 6.0 mm 14.2 mm 25.8 mm 37.5 mm
CF1438 8.0 mm 15.8 mm 25.8 mm 38.2 mm
CF14321.3 21.3 mm 15.8 mm 25.8 mm 38.2 mm

1″ NPT Fittings

NPT-1-angled
Part No. A to suit tube B C D
CF1536 6.0 mm 14.0 mm 35.0 mm 22.1 mm
CF15321.3 21.3 mm 32.0 mm 35.0 mm 22.1 mm