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Technical Data
Lapp Catalog

SKINTOP® Strain Relief Cord Connectors

Thread Dimensions and Tightening Values
for SKINTOP® Connectors

    
       
 

Metric Thread Technical Data for Assembly, EN 6042 (for cable glands EN 50 262)

Metric Thread

Core
Diameter
Pitch
Outside
Diameter
Nominal Thread
Bore Diameter
D1
P
D2
D3
M12 x 1.5
12
1.50
10.6
12.3 0.2
M16 x 1.5
16
1.50
14.6
16.3 - 0.2
M20 x 1.5
20
1.50
18.6
20.3 - 0.2
M25 x 1.5
25
1.50
23.6
25.3 - 0.2
M32 x 1.5
32
1.50
30.6
32.3 - 0.2
M40 x 1.5
40
1.50
38.6
40.4 - 0.2
M50 x 1.5
50
1.50
48.6
50.4 - 0.2
M63 x 1.5
63
1.50
61.6
64.4 - 0.2
 PG Thread Technical Data for Assembly

PG Thread

Core
Diameter
Pitch
Outside
Diameter
Nominal Thread
Bore Diameter
D1
P
D2
D3
PG 7
12.5
1.270
11.3
13.3 + 0.2
PG 9
15.2
1.410
13.9
15.7 + 0.2
PG 11
18.6
1.410
17.3
19.0 + 0.2
PG 13.5
20.4
1.410
19.1
21.0 + 0.2
PG 16
22.5
1.410
21.2
23.0 + 0.2
PG 21
28.3
1.558
26.8
28.8 + 0.2
PG 29
37.0
1.558
35.5
37.5 + 0.3
PG 36
47.0
1.558
45.5
47.5 + 0.3
PG 42
54.0
1.558
52.5
54.5 + 0.3
PG 48
59.3
1.558
57.8
59.8 + 0.3
NPT Thread Technical Data for Assembly ASA B2.1-1945

NPT Thread

Core
Diameter
Pitch
Nominal Thread
Bore Diameter
D1
P
D3
NPT 1/4"
13.7
1.41
14.0 - 0.2
NPT 3/8"
17.1
1.41

17.4 - 0.2

NPT 1/2"
21.3
1.81
21.6 - 0.2
NPT 3/4"
26.7

1.81

27.0 - 0.2
NPT 1"
33.4
2.21
33.7 - 0.2
NPT 1 1/4"
42.2
2.21
42.5 - 0.2
NPT 1 1/2"
48.3
2.21
48.7 - 0.2
NPT 2 "
60.3
2.21
60.7 - 0.2
Tightening Torque* Metric

Metric Thread

Tightening Torque in Nm
Polymer
Metal
M12 x 1.5
1.5
1.50
M16 x 1.5
3.0
1.50
M20 x 1.5
6.0
1.50
M25 x 1.5
8.0
1.50
M32 x 1.5
10.0
1.50
M40 x 1.5
13.0
1.50
M50 x 1.5
15.0
1.50
M63 x 1.5
16.0
1.50
M63 Plus
--
30
* Not for ATEX Glands
Tightening Torque Values to DIN/VDE 0619, Point 7 (PG & NPT Glands)

PG Thread

NPT Thread

Torque for intermediary
in Nm
Torque for Cap Nut
Polymer
Metal
Polymer
Metal
PG 7
 
2.5
6.25
1.7
4.2
PG 9
NPT 3/8"
3.75
6.25
2.5
4.2
PG 11
 
3.75
6.25
2.5
4.2
PG 13.5
NPT 1/2"
3.75
6.25
2.5
4.2
PG 16
 
5.0
7.50
3.3
5.0
PG 21
NPT 3/4"
7.5
10.0
5.0
6.7
PG 29
NPT 1"
7.5
10.0
5.0
6.7
PG 36
 
7.5
10.0
5.0
6.7
PG 42
 
7.5
10.0
5.0
6.7
PG 48
 
7.5
10.0
5.0
6.7
* Reference: Above values are tightening torques for the intermediary, as well as maximum tightening torques for the cap nuts. To prevent damages of the outer sheath, please note that the different cable materials require various torques.
Fitting dimensions and widths across flats
The diameter SW indicates the wrenching flats. The diameter A indicated the assembly space required for the relevant hexagon. This diameter corresponds to the width across corner of hexagon, plus an assembly tolerance.
Dimensions are in mm2
SW
A
SW
A
SW
A
9
10.4
26
29.5
46
52.5
11
12.5
27
30.6
47
52.5
13
14.9
28
31.8
50
58.3
14
16.0
29
32.5
53
60.0
15
17.1
30
34.0
54
61.0
16
18.2
32
36.2
55
62.0
17
19.4
33
37.2
57
64.4
18
20.4
36
40.5
60
67.5
19
22.0
37
41.5
64
72.3
20
22.7
39
44.0
65
73.1
21
23.9
40
45.2
66
74.5
22
25.0
41
46.1
67
74.5
24
27.3
42
47.0
   
25
28.3
45
51.2
   

      

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