IBM ThinkPad R40 Hardware Maintenance Manual page 81

For machine type 2684, 2685
Step Screw (quantity)
1
M2.5 × 8.5 mm, Black (2)
(continued)
Removing and replacing a FRU
1
ThinkPad R40
Torque
0.294 Nm
(3 kgfcm)
77