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 11.1 22.1
CF18315 1.5 mm 14.2 11.1 25.4
CF18312 2.0 mm 11.1 11.1 23.8

1/8″ NPT Fittings

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

1/4″ NPT Fittings

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

1/2″ NPT Fittings

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

3/4″ NPT Fittings

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

1″ NPT Fittings

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