Step Screw (Quantity) - Lenovo E51-80 Hardware Maintenance Manual

Removal steps of the upper case
1
Remove eight screws
Remove nine screws 1
Step Screw (quantity)
1
M2.5 × 6mm, flat-headed, nylon-coated (8) (E41)
M2.5 × 7mm, flat-headed, nylon-coated (9) (E51)
2
M2.0 × 2mm, flat-headed, nylon-coated
60
Hardware Maintenance Manual
2
and two screws on the bottom. (E41)
a
a
a
a
and three screws 2 on the bottom. (E51)
a
b
b
b
a
a
a
a
a
a
a
a
a
a
a
a
Color Torque
Black
3.0 +/- 0.3kgf-cm
Black 3.0 +/- 0.3kgf-cm
Black
1.85 +/- 0.15kgf-cm