IBM THINKPAD S05L-1270-01 - Manual (Page 507)

Step Size (quantity) Torque
1 M2.5 x 6 mm (2) 3 kgcm
Note: Make sure you use the correct screw and tighten the
screw to the torque specified. Do not use the screw that you
removed, use a new screw.
ThinkPad 765D (9546), 765L (9547) 495