Lenovo ThinkPad T540p Maintenance Manual page 91

Step Screw (quantity)
3
M2.5 × 6 mm, flat-head, nylon-coated (2)
When installing:
Ensure that the connectors are attached firmly.
Color Torque
Black 0.392 Nm
(4.0 kgf-cm)
.
Chapter 9 Removing or replacing a FRU
85