Lenovo ThinkPad X121e Hardware Maintenance Manual page 77

Step Screw (quantity)
3
M2.5 × 5 mm, wafer-head, nylon-coated (4)
1
1
1
1
Color Torque
Black 0.392 Nm
(4 kgfcm)
.
Chapter 8 Removing and replacing a FRU
71