Delta PCS100HV - Page 57

Installation Manual
50
Appendix
Screw Torque Table
1. The torque level for M3~M5 screws is 4.8, refer to the following torque standard table to make sure
the washers are in close contact with the screws.
Table 20: Screw Torque Table for M3~M5 Screws
Screw Assembly Torque Standard
Unit: N·m
Screw Type
M3
M4
M5
Screw Thread
Standard
Standard
Standard
Material
N/A
Securing
Secured
Steel Plate
Steel Plate
0.8 ± 0.15
1.4 ± 0.2
3.0 ± 0.2
Steel Plate
Aluminum Plate
0.7 ± 0.1
1.4 ± 0.15
3.0 ± 0.2
Aluminum Plate
Aluminum Plate
Plastic
Aluminum Plate
0.6 ± 0.1
0.8 ± 0.15
1.2 ± 0.2
Plastic
Steel Plate
0.6 ± 0.1
0.8 ± 0.15
1.2 ± 0.2
PWB
Steel Plate
0.6 ± 0.2
1.0 ± 0.2
N/A
Insulator
Copper Plate
0.6 ± 0.2
1.2 ± 0.2
1.6 ± 0.2
1. The torque level for M6 or bigger screws is 8.8, refer to the following torque standard table to make
sure the washers are in close contact with the screws.
Table 21: Screw Torque Table for M6~M16 Screws
Screw Assembly Torque Standard
Unit: N·m
Screw Type
M6
M8
M10
M12
M14
M16
ST5.5
Screw Thread
Standard
Standard
Standard
Standard
Standard
Standard
Customized
Material
N/A
Securing
Secured
Steel
Plate
Steel
Plate
5 ± 1
12.5 ± 1
25 ± 2
42 ± 3
N/A
100 ± 10
5.5 ± 1
Copper
Plate
Copper
Plate
5 ± 1
12.5 ± 1
25 ± 2
42 ± 3
N/A
100 ± 10
N/A
Insulator
Copper
Plate
5 ± 1
10 ± 1
12.5 ± 2
N/A
N/A
N/A
N/A