THICK STEEL CONDUIT THREADS (CTG)

Thick Steel Conduit Thread Profile

Thread form angle : 55°
P : Pitch
n : TPI
H : Height of fundamental triangle
h : Height of thread
D : Major diameter of internal thread
D1 : Minor diameter of internal thread
D2 : Pitch diameter of internal thread
d : Major diameter of external thread
d1 : Minor diameter of external thread
d2 : Pitch diameter of external thread

Thick Steel Conduit Thread Tolerance

T : Tolerance
TD1, TD2 : Tolerance for D1, D2
Td1, Td2 : Tolerance for d1, d2
ES : Upper deviation of internal thread
es : Upper deviation of external thread
EI : Lower deviation of internal thread
ei : Lower deviation of external thread
G : tolerance positions for lower deviation of internal thread
h : tolerance positions for upper deviation of external thread

CTG thread has no specified tolerance class.

Number of threads per inch (TPI) :

n =

0

Pitch :

P =

0

mm

Height of fundamental triangle :

H =

0

mm

Height of thread :

h =

0

mm

Major diameter (mm)

0.000

0.000

0.000

=

invalid size

Minor diameter (mm)

0.000

0.000

0.000

=

invalid size

Pitch diameter (mm)

0.000

0.000

0.000

=

invalid size

For not specified tolerance, we use the pitch tolerance to calculate the average value.

Standard Thick Steel Conduit Thread

Size	TPI
CTG 16	14
CTG 22	14
CTG 28	11
CTG 36	11
CTG 42	11
CTG 54	11
CTG 70	11
CTG 82	11
CTG 92	11
CTG 104	11