HP Compaq Presario CQ50 screw size
M2 / M2.5 / M3 · 3 to 10 mm long
HP Compaq Presario CQ50 takes M2, M2.5 and M3 metric screws in lengths from 3 to 10 mm.
There are 27 separate fitment records for it, including fan (qty 4, captive, Phillips) (M2), display (qty 3, Phillips) (M2) and keyboard (qty 2, Phillips) (M2), plus 24 more in the table below.
Head and drive, as the sources state them: Phillips drive.
27 of the 27 records are marked confirmed, drawn from 1 source (tim.id.au).
For reference, M2 is 2 mm across the threads at 0.4 mm pitch. The imperial size people confuse it with: #2-56 UNC (2.18 mm) is close but not interchangeable.
HP Compaq Presario CQ50 screw specifications
One row per fitment record. Head, drive are shown only where the source states them; pitch is the ISO coarse pitch for the thread.
| Thread | Length | Pitch | Head | Drive | Where it goes | Status |
|---|---|---|---|---|---|---|
| M2 | 10 mm | 0.4 mm | not stated | Phillips | Fan (qty 4, captive, Phillips)captive | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Display (qty 3, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Keyboard (qty 2, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Optical drive (qty 2, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Palm rest (qty 2, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Power button (qty 2, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Speaker (Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Touchpad (qty 4, Phillips) | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | Phillips | I/O board (qty 2, Phillips) | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | Phillips | Palm rest (qty 4, Phillips) | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | Phillips | Speaker (Phillips) | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | Phillips | Wireless card (qty 2, Phillips) | Confirmed |
| M2.5 | 10 mm | 0.45 mm | not stated | Phillips | Display (qty 4, Phillips) | Confirmed |
| M2.5 | 10 mm | 0.45 mm | not stated | Phillips | Keyboard (qty 2, Phillips) | Confirmed |
| M2.5 | 10 mm | 0.45 mm | not stated | Phillips | Palm rest (qty 4, captive, Phillips)captive | Confirmed |
| M2.5 | 10 mm | 0.45 mm | not stated | Phillips | System board (qty 2, Phillips) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | Display (qty 2, Phillips) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | Hard drive (qty 3, Phillips) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | Keyboard (qty 3, Phillips) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | Wireless card (qty 2, Phillips) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | Phillips | Hard drive (qty 2, captive, Phillips)captive | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | Phillips | Memory (qty 2, captive, Phillips)captive | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | Phillips | Wireless card (Phillips) | Confirmed |
| M2.5 | 7 mm | 0.45 mm | not stated | Phillips | Hinge (qty 2, Phillips) | Confirmed |
| M2.5 | 8 mm | 0.45 mm | not stated | Phillips | Display (qty 2, Phillips) | Confirmed |
| M2.5 | 9 mm | 0.45 mm | not stated | Phillips | Optical drive (Phillips) | Confirmed |
| M3 | 4 mm | 0.5 mm | not stated | Phillips | Hard drive (qty 2, Phillips) | Confirmed |
Fitment records and sources
Fan (qty 4, captive, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 3, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Keyboard (qty 2, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Optical drive (qty 2, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 2, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Power button (qty 2, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Speaker (Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Touchpad (qty 4, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
I/O board (qty 2, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 4, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Speaker (Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Wireless card (qty 2, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 4, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Keyboard (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 4, captive, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
System board (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 3, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Keyboard (qty 3, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Wireless card (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 2, captive, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Memory (qty 2, captive, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Wireless card (Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hinge (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Optical drive (Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 2, Phillips)
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
How to check the screw before you buy
- A screw that is even 1 mm too long in a laptop base can push into the keyboard, battery or a board trace, so match the length position by position.
- Diameter: across the threads an M2 screw measures about 2 mm with calipers (usually a hair under). This device also uses M2.5 / M3, so measure each screw rather than assuming they match.
- Pitch: 0.4 mm from one thread crest to the next (25 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
- Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- The records span 3–10 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source names a Phillips drive. For comparison, standard M2 heads take PH0 (Phillips) or T6 (Torx), or a 1.5 mm hex key.
- Tightening: no device-specific torque is published in these records. The site's general figure for M2 is about 25-40 N·cm into metal threads and 12-20 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2 / M2.5 / M3
- The standard M.2 SSD screw is M2 x 3mm, but some laptops and handhelds use non-standard lengths or head shapes.
- M2.5 pitch is 0.45mm vs M3's 0.5mm and M2's 0.4mm — forcing the wrong one strips plastic bosses instantly.
- Thorlabs' 16mm cage system standard plates use dual 4-40 (UNC) and M3 taps on the same plate (e.g., SP01), so metric and imperial fasteners are both valid depending on the region/kit purchased.
Buy these screws at TechSpare Warehouse
In stock and shipped from South Carolina. Our black screws are Phillips wafer head (low profile); match the head style and length to the original before you order.
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More in Laptops & PCs
The same screw also fits
Devices whose records share a thread with HP Compaq Presario CQ50, closest length match first.
- Lenovo Y50-70 also M2 × 3 mm
- Dell Vostro 1310 also M2 × 3 mm
- Dell Inspiron 15 5502 also M2 × 3 mm
- Dell Inspiron 11 3162 also M2 × 3 mm
- HP EliteBook 8440p also M2 × 3 mm
- HP Evo N610c also M2.5 × 5 mm
- Lenovo Z70-80 also M2 × 3 mm
- HP EliteBook 720 G2 also M2 × 3 mm
Questions about HP Compaq Presario CQ50 screws
- What size screw does HP Compaq Presario CQ50 use?
- M2 × 10 mm for fan (qty 4, captive, Phillips); M2 × 3 mm for display (qty 3, Phillips); M2 × 3 mm for keyboard (qty 2, Phillips); M2 × 3 mm for optical drive (qty 2, Phillips); M2 × 3 mm for palm rest (qty 2, Phillips); M2 × 3 mm for power button (qty 2, Phillips); M2 × 3 mm for speaker (Phillips); M2 × 3 mm for touchpad (qty 4, Phillips); M2 × 6 mm for I/O board (qty 2, Phillips); M2 × 6 mm for palm rest (qty 4, Phillips); M2 × 6 mm for speaker (Phillips); M2 × 6 mm for wireless card (qty 2, Phillips); M2.5 × 10 mm for display (qty 4, Phillips); M2.5 × 10 mm for keyboard (qty 2, Phillips); M2.5 × 10 mm for palm rest (qty 4, captive, Phillips); M2.5 × 10 mm for system board (qty 2, Phillips).
- How long are the screws in HP Compaq Presario CQ50?
- The records range from 3 to 10 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M2 screw?
- 0.4 mm (coarse), which is the standard pitch for M2 machine screws; a 0.25 mm fine pitch exists but is uncommon. The tap drill is 1.6 mm and the normal clearance hole is 2.4 mm.
- What screwdriver do I need for HP Compaq Presario CQ50?
- The source lists a Phillips drive. Standard M2 heads otherwise take PH0 (Phillips) or T6 (Torx), or a 1.5 mm hex key.
- Can I use an imperial screw instead of M2?
- No. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable. Use a true M2 screw so it does not cross-thread or strip the hole.
- Where can I buy replacement screws for HP Compaq Presario CQ50?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M2 x 6mm and M2.5 x 10mm, which match lengths in the records above.



