Lenovo ThinkPad X1 Nano Gen 3 Hardware Maintenance Manual page 72

Removal steps of the trackpad
Step Screw (quantity)
4
M2 × L1.8 mm, fine pitch, nylon-coated (4)
66
ThinkPad X1 Nano Gen 3 Hardware Maintenance Manual
Color Torque
Black 0.181 Nm
(1.85 kgf-cm)