Free Hit Counters





 

Dimensions of Threads
Dimensions of Threads for Steel Conduit and Coupling



Trade
Size
(in.)
Thread per
inch
Pitch Dia.
at End of thread
Eo (mm.)
Length of Thread
Outside Diameter
(mm.) H1
Min Acceptable
Length of
Coupling (mm.) H2
Effective
L2 (mm.)
Overall
L4 (mm.)
1/2"
14"
19.3
13.5
19.8
25.7
41.3
3/4"
14"
24.3
14.0
20.1
31.8
41.7
1"
11 1/2"
30.8
17.3
24.9
38.7
50.0
1 1/4"
11 1/2"
39.5
18.0
25.7
47.5
51.6
1 1/2"
11 1/2"
45.6
18.3
26.2
54.7
52.4
2"
11 1/2"
57.6
19.3
26.9
67.3
54.0
2 1/2"
8"
69.1
29.0
39.9
82.6
81.0
3"
8"
84.9
30.5
41.4
98.3
84.1
3 1/2"
8"
97.5
31.8
42.7
111.1
86.5
4"
8"
110.1
33.0
43.9
123.8
89.3
5"
8"
136.9
35.8
46.7
152.4
100.0
6"
8"
163.7
38.4
49.5
182.9
108.0

TOLERANCE :

Pitch Diameter
± 1 Turn (of the thread gauges)

Thread Length
± 1 Thread


 

Home Company Info Our Product Map Contact Us Order Now!