IBM ThinkPad T21 Hardware Maintenance Manual page 126

Removing and replacing a FRU
For models excepting MT2647-xLx, xNx
Step Screw (quantity)
2
M2.5 × 14 mm, nylon-coated (1)
4
M2.5 × 4.8 mm, nylon-coated (2)
120
ThinkPad T20, T21, T22, T23 (MT 2647/2648)
4
2
3
4
Torque
0.392 Nm
(4 kgfcm)
0.392 Nm
(4 kgfcm)