Acer TravelMate 4320 screw size
M2 / M2.5 / M3 · 2.5 to 6 mm long
The screws used on Acer TravelMate 4320 are M2, M2.5 and M3 in lengths from 2.5 to 6 mm.
There are 17 separate fitment records for it, including optical drive (qty 2, silver) (M2), I/O board (qty 4, silver) (M2) and display (qty 8, silver) (M2), plus 14 more in the table below.
17 of the 17 records are marked confirmed, drawn from 1 source (tim.id.au).
An M2 screw is 2 mm in diameter with a 0.4 mm pitch, tapped with a 1.6 mm drill; imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable.
Acer TravelMate 4320 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 | 2.5 mm | 0.4 mm | not stated | not stated | Optical drive (qty 2, silver) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | I/O board (qty 4, silver) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Display (qty 8, silver) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Keyboard (qty 2, silver) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Power button (qty 2, silver) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Touchpad (qty 4, silver) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Unspecified (qty 2, silver) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Wireless card (qty 2, silver) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Heat sink (qty 5, silver) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Unspecified (qty 4, black)black finish | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Display (qty 2, silver,black)black finish | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Display bezel (qty 4, black)black finish | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Fan (qty 2, black)black finish | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Unspecified (qty 3, black)black finish | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | not stated | Display (qty 11, black)black finish | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | not stated | Display bezel (qty 6, black)black finish | Confirmed |
| M3 | 4 mm | 0.5 mm | not stated | not stated | Speaker (qty 2, silver) | Confirmed |
Fitment records and sources
Optical drive (qty 2, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
I/O board (qty 4, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 8, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Keyboard (qty 2, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Power button (qty 2, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Touchpad (qty 4, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 2, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Wireless card (qty 2, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Heat sink (qty 5, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 4, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 2, silver,black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display bezel (qty 4, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Fan (qty 2, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Unspecified (qty 3, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 11, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display bezel (qty 6, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Speaker (qty 2, silver)
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
How to check the screw before you buy
- Laptop covers and brackets often mix two or three lengths of the same thread, so lay the screws out in the order they came out (a magnetic mat or a sheet of paper with the hole pattern drawn on it works).
- 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 2.5–6 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M2 heads take PH0 for Phillips and T6 for Torx, and a 1.5 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
- 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.
- PC cases mix M3 (fans, optical and 2.5in drives) with imperial 6-32 (3.5in drives, motherboard standoffs) - don't force one into the other.
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 Acer TravelMate 4320, closest length match first.
- Lenovo ThinkPad R51 also M2 × 3 mm
- Lenovo ThinkPad P43s also M2 × 2.5 mm
- HP Spectre x360 13-w0xx also M2 × 2.5 mm
- HP Elite mt645 G7 Mobile Thin Client also M2 × 2.5 mm
- Lenovo ThinkPad Yoga 370 also M2 × 2.5 mm
- Lenovo ideapad 330S also M2 × 3 mm
- Lenovo File-1645565779 also M2 × 4 mm
- HP EliteBook 835 G8 also M2 × 2.5 mm
Questions about Acer TravelMate 4320 screws
- What size screw does Acer TravelMate 4320 use?
- M2 × 2.5 mm for optical drive (qty 2, silver); M2 × 3 mm for I/O board (qty 4, silver); M2 × 3 mm for display (qty 8, silver); M2 × 3 mm for keyboard (qty 2, silver); M2 × 3 mm for power button (qty 2, silver); M2 × 3 mm for touchpad (qty 4, silver); M2 × 3 mm for unspecified (qty 2, silver); M2 × 3 mm for wireless card (qty 2, silver); M2 × 4 mm for heat sink (qty 5, silver); M2 × 4 mm for unspecified (qty 4, black); M2.5 × 5 mm for display (qty 2, silver,black); M2.5 × 5 mm for display bezel (qty 4, black); M2.5 × 5 mm for fan (qty 2, black); M2.5 × 5 mm for unspecified (qty 3, black); M2.5 × 6 mm for display (qty 11, black); M2.5 × 6 mm for display bezel (qty 6, black); M3 × 4 mm for spea.
- How long are the screws in Acer TravelMate 4320?
- The records range from 2.5 to 6 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 Acer TravelMate 4320?
- The sources do not name the drive. For M2, Phillips heads normally take PH0 and Torx heads T6; socket heads take 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 Acer TravelMate 4320?
- TechSpareWarehouse (our own store) lists M2 x 2.5mm, M2 x 3mm and M2 x 4mm, which match lengths in the records above.



