IBM X23 - Manual (Page 92)

For X22, X23, X24
1
3
4
2
Step Screw (quantity) Torque
1 M2 × 6mm, Nylock-coated
(1) BK
19.6 Ncm (2 kgfcm)
88 ThinkPad X20, X21, X22, X23, X24