Confidential
RF4402d Series Installation Manual v1.0
117
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Appendix D
Standard Torque
When operator fastens the bolt, refer to the standard torque value below to prevent
the equipment and bolt from damage and secure by fastening. When the torque
value for each connection part is defined already, refer to the defined value.
Table 42. Standard Torque Value for Fastening Bolts
Bolt Spec.
Torque Value (N·m)
Torque Value (lbf·in)
Torque Value (kgf·cm)
M3 0.63 5.6 6.4
M4 1.5 13 15
M5 2.8 25 29
M6 4.9 43 50
M8 12 110 127
M10 25 217 250
M12 42 372 428
Table 43. Brass Bolts Torque Value
Bolt Spec.
Torque Value (N·m)
Torque Value (lbf·in)
Torque Value (kgf·cm)
M6 2.9 26 30
M8 6.3 56 64
Table 44. Connector Connection Torque Value
Connector
Torque Value (N·m)
Torque Value (lbf·in)
Torque Value (kgf·cm)
SMA connector
0.59
5.2
6
TNC connector
0.88
7.8
9
N-type connector
2
17
20
DIN-type connector
25
217
250
4.3-10-type connector
5
44
51
Torque value can be different, defending on the material, characteristic and
specification of the equipment and fastener. Make sure to check the proper torque
value for each specification of the equipment and fastener.
