HP ZE4900 - Manual (Page 175)

Screw Listing
Maintenance and Service Guide C–19
HM5.0×9.0 Screwlock Locations - All Notebook Models Except
HP Compaq nx9040
Table C-9
HM5.0×9.0 Screwlock (Continued)
Color Qty. Length Thread
Head
Width
Silver 8 9.0 mm 2.5 mm 5.0 mm
Where used:
2 screwlocks that secure the system board to the notebook (documented
in
Section 5.19 , all notebook models except HP Compaq nx9040)
mm