Lenovo ThinkPad S440 Hardware Maintenance Manual page 96

Removal steps of the hinges
Step Screw (quantity)
1
M2.5 × 2.5 mm, wafer-head, nylon-coated (4)
2
M2.5 × 4 mm, wafer-head, nylon-coated (2)
90
Hardware Maintenance Manual
Color Torque
Silver 0.196 Nm
(2.00 kgf-cm)
Black 0.196 Nm
(2.00 kgf-cm)