Lenovo ThinkPad T490s Hardware Maintenance Manual page 92

ThinkPad X390
Step Screw (quantity)
2
M2 x (2.2 + 2.5) mm, flat-head, nylon-coated (4)
When installing:
• Ensure that the connector is attached firmly.
86
T490s and X390 Hardware Maintenance Manual
Color Torque
Black 0.181 Nm
(1.85 kgf-cm)