IBM ThinkPad T40 Hardware Maintenance Manual page 109

Step Screw (quantity)
4
M2 × 4 mm, bind-head,
nylon-coated (1)
Removing and replacing a FRU
Color
Black
ThinkPad T40 Series
4
6
5
Torque
0.245 Nm
(2.5 kgfcm)
105