HP Compaq nc8000 Maintenance And Service Manual page 182

Screw Listing
mm
Where used:
Three screws that secure the fan to the fan housing
(documented in
Phillips PM1.5×4.0 Screw Locations
C–14
Phillips PM1.5×4.0 Screw
Color
Black
Section 5.22)
Table C-9
Qty. Length
3 4.0 mm
Maintenance and Service Guide
Head
Thread Width
1.5 mm 3.0 mm