Heyco Liquid Tight Cord Grips Torque Recommendations ChartBrass Cord Grips
Heyco® Brass Cordgrips
NPT Thread
Thread Cable Range Lower Part Compression Nut
mm Nm Nm
1/8" NPT 3.0 - 4.0 5 4
4.0 - 6.0 5 2
1/4" NPT 3.5 - 5.0 7 4
5.0 - 6.5 7 5
6.5 - 8.0 7 3
3/8" NPT 3.5 - 4.5 11 7
4.5 - 6.0 11 6
6.0 - 8.0 11 5
8.0 - 10.5 11 3
6.0 - 10.5 11 4
1/2" NPT 6.0 - 8.0 16 10
8.0 - 11.0 16 9
11.0 - 15.0 16 5
8.0 - 15.0 16 5
3/4" NPT 9.5 - 12.5 18 10
12.5 - 16.0 18 10
16.0 - 20.5 18 4
12.5 - 20.5 18 7
1" NPT 14.0 - 17.0 21 5
17.0 - 21.0 21 4
21.0 - 25.5 21 4
17.0 - 25.5 21 6
1-1/4" NPT 20.0 - 24.0 30 10
24.0 - 28.5 30 8
28.5 - 33.0 30 9
24.0 - 33.0 30 12
1-1/2" NPT 29.0 - 33.0 40 11
33.0 - 37.0 40 14
37.0 - 41.0 40 14
33.0 - 41.0 40 22
2" NPT 35.0 - 40.0 48 40
40.0 - 46.0 48 39
46.0 - 52.0 48 33
40.0 - 52.0 48 38
The specified torques for compression nuts are maximum values. These nuts should be tightened until the torque specified in the table is reached OR until the sealing insert protrudes slightly over the compression nut.
 
Heyco® Brass Cordgrips
PG Thread
Thread Cable Range Compression Nut
mm Nm
PG 7 3.5 - 5.0 4
5.0 - 6.5 5
6.5 - 8.0 3
PG 9 3.5 - 4.5 7
4.5 - 6.0 6
6.0 - 8.0 5
8.0 - 10.5 3
6.0 - 10.5 4
PG 11 4.0 - 5.5 8
5.5 - 8.5 7
8.5 - 12.0 5
5.5 - 12.0 5
PG 13 6.0 - 8.0 10
8.0 - 11.0 9
11.0 - 15.0 5
8.0 - 15.0 5
PG 16 6.0 - 8.0 10
8.0 - 11.0 9
11.0 - 15.0 5
8.0 - 15.0 5
PG 21 9.5 - 12.5 10
12.5 - 16.0 10
16.0 - 20.5 4
12.5 - 20.5 7
PG 29 16.0 - 19.0 10
19.0 - 23.0 8
23.0 - 27.5 8
19.0 - 27.5 8
PG 36 21.5 - 26.0 40
26.0 - 30.5 30
30.5 - 35.0 30
26.0 - 35.0 30
PG 42 29.0 - 33.0 40
33.0 - 37.0 30
37.0 - 42.0 30
33.0 - 42.0 40
PG 48 32.0 - 37.0 50
37.0 - 43.0 40
43.0 - 49.0 40
37.0 - 49.0 40
The specified torques are maximum values for compression nuts. These nuts should be tightened until the torque specified in the table is reached OR until the sealing insert protrudes slightly over the compression nut. Intermediate connecting pieces (lower part of cable gland) and lock nuts should be tightened with the greatest torque for the respective thread size and protected against inadvertent loosening.
 
Heyco® Brass Cordgrips
Metric Thread
Thread Cable Range Compression Nut
mm Nm
M6 x 1 2.0 - 2.5 2
2.5 - 3.0 1
2.0 - 3.5 1
M8 x 1.25 2.5 - 3.5 2
3.0 - 5.0 1
M10 x 1.5 3.0 - 4.0 4
4.0 - 6.0 2
M12 x 1.5 3.5 - 5.0 4
5.0 - 6.5 5
6.5 - 8.0 3
M16 x 1.5 3.5 - 4.5 7
4.5 - 6.0 6
6.0 - 8.0 5
8.0 - 10.5 3
6.0 - 10.5 4
M20 x 1.5 6.0 - 8.0 10
8.0 - 11.0 9
11.0 - 15.0 5
8.0 - 15.0 5
M25 x 1.5 9.5 - 12.5 10
12.5 - 16.0 10
16.0 - 20.5 4
12.5 - 20.5 7
M32 x 1.5 17.0 - 21.0 4
21.0 - 25.5 4
17.0 - 25.5 6
M40 x 1.5 20.0 - 24.0 10
24.0 - 28.5 8
28.5 - 33.0 9
24.0 - 33.0 12
M50 x 1.5 29.0 - 33.0 11
33.0 - 37.0 14
37.0 - 42.0 14
33.0 - 42.0 22
M63 x 1.5 35.0 - 40.0 40
40.0 - 46.0 39
46.0 - 52.0 33
40.0 - 52.0 38
M75 x 1.5 45.0 - 50.0 53
50.0 - 56.0 42
56.0 - 63.0 43
50.0 - 63.0 50
The specified torques are maximum values for compression nuts. These nuts should be tightened until the torque specified in the table is reached OR until the sealing insert protrudes slightly over the compression nut. Intermediate connecting pieces (lower part of cable gland) and lock nuts should be tightened with the greatest torque for the respective thread size and protected against inadvertent loosening.