Lenovo ThinkPad S540 Hardware Maintenance Manual page 86

Step Screw (quantity)
4
M2.0 × 5 mm, flat-head, nylon-coated (2)
5
M2.5 × 5 mm, flat-head, nylon-coated (6)
80
Hardware Maintenance Manual
Color Torque
Silver 0.181 Nm
(1.85 kgf-cm)
Black 0.392 Nm
(4.0 kgf-cm)