Heyco Conduit, Tubing & Fittings Flexicon Technical Specifications

Conduit Fittings Thread Data

NPT American taper pipe thread conforming to
ANSI/ASME B1.20.1 – 1983
Thread size
(inches)
External thread
outside diameter
(mm)
Pitch
(mm)
3/8 16.7 1.14
1/2 21.0 1.81
3/4 26.4 1.81
1 33.3 2.21
1-1/4 41.9 2.21
1-1/2 47.8 2.21
2 59.6 2.21
PG German standard thread conforming to DIN40430

Thread
size
External thread
outside diameter
(mm)
Internal thread
inside diameter
(mm)
Pitch
(mm)
PG 7   12.5 11.3 1.27
PG 9   15.2 13.9 1.41
PG 11 18.6 17.3 1.41
  PG 13.5 20.4 19.1 1.41
PG 16 22.5 21.2 1.41
PG 21 28.3 26.8 1.59
PG 29 37.0 35.5 1.59
PG 36 47.0 45.5 1.59
PG 42 54.0 52.5 1.59
PG 48 59.3 57.8 1.59
Metric standard thread conforming to EN60423
Thread
size
External thread
outside diameter
(mm)
Internal thread
inside diameter
(mm)
Pitch
(mm)
M12 12.0 10.4 1.5
M16 16.0 14.4 1.5
M20 20.0 18.4 1.5
M25 25.0 23.4 1.5
M32 32.0 30.4 1.5
M40 40.0 38.4 1.5
M50 50.0 48.4 1.5
M63 63.0 61.4 1.5
M75 75.0 73.4 1.5