IBM X23 - Manual (Page 75)

1a
1
2
Step Screw (quantity) Torque
1a M2 × 3.5mm (2)
Nylock-coated Silver
19.6 Ncm (2 kgfcm)
1090 BDC adapter
For X23, X24
v Battery pack (1010)
v Keyboard assembly (1050)
Chapter 3. ThinkPad X20, X21, X22, X23, X24 71