Acer Aspire 8940 screw size
M2 / M2.5 / M3 · 3 to 6.5 mm long
Acer Aspire 8940 takes M2, M2.5 and M3 metric screws in lengths from 3 to 6.5 mm.
There are 24 separate fitment records for it, including bracket (qty 2) (M2), display (qty 8) (M2) and optical drive (qty 2) (M2), plus 21 more in the table below.
24 of the 24 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.
Acer Aspire 8940 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 | 3 mm | 0.4 mm | not stated | not stated | Bracket (qty 2) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Display (qty 8) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Optical drive (qty 2) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Palm rest (qty 1, blue) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Speaker (qty 6) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Touchpad (qty 2) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Unspecified (qty 28, blue) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Wireless card (qty 2) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | I/O board (qty 1) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Display (qty 8) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Display bezel (qty 2) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Hinge (qty 6) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Optical drive (qty 1) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Palm rest (qty 10) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | System board (qty 3) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Unspecified (qty 32) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Display bezel (qty 2) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Unspecified (qty 2) | Confirmed |
| M2.5 | 6.5 mm | 0.45 mm | not stated | not stated | Display (qty 4) | Confirmed |
| M2.5 | 6.5 mm | 0.45 mm | not stated | not stated | Heat sink (qty 2) | Confirmed |
| M2.5 | 6.5 mm | 0.45 mm | not stated | not stated | Palm rest (qty 9) | Confirmed |
| M2.5 | 6.5 mm | 0.45 mm | not stated | not stated | Unspecified (qty 25) | Confirmed |
| M3 | 3 mm | 0.5 mm | not stated | not stated | Hard drive (qty 2) | Confirmed |
| M3 | 3 mm | 0.5 mm | not stated | not stated | Unspecified (qty 4) | Confirmed |
Fitment records and sources
Bracket (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 8)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Optical drive (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 1, blue)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Speaker (qty 6)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Touchpad (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 28, blue)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Wireless card (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
I/O board (qty 1)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 8)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display bezel (qty 2)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hinge (qty 6)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Optical drive (qty 1)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 10)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
System board (qty 3)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Unspecified (qty 32)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display bezel (qty 2)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Unspecified (qty 2)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 4)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Heat sink (qty 2)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 9)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Unspecified (qty 25)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 2)
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
Unspecified (qty 4)
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 3–6.5 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
- M.2 SSD mounting screws (M2 x 3mm) are frequently mislabeled generically as 'M.2 screws' which can be confused with the M2 metric thread designation — they do coincide numerically here but are conceptually distinct (M.2 = card format, M2 = thread size).
- M2.5 and M3 look the same to the naked eye — you need calipers on the shank to tell them apart.
- 3.5in desktop and enterprise hard drives are 6-32 UNC imperial, not M3 - only the 2.5in form factor is metric.
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 Aspire 8940, closest length match first.
- Lenovo V730-13 also M2 × 3 mm
- HP Compaq nx6325 also M2 × 3 mm
- Lenovo ThinkPad Tp13 also M2 × 3 mm
- Lenovo ZhaoYang E4430 also M2 × 3 mm
- HP EliteBook 828 G4 also M2 × 3 mm
- Lenovo V15 Gen 6 i also M2.5 × 5 mm
- Dell Inspiron 16 7640 2-in-1 also M2 × 3 mm
- Acer TravelMate 8371 also M2 × 3 mm
Questions about Acer Aspire 8940 screws
- What size screw does Acer Aspire 8940 use?
- M2 × 3 mm for bracket (qty 2); M2 × 3 mm for display (qty 8); M2 × 3 mm for optical drive (qty 2); M2 × 3 mm for palm rest (qty 1, blue); M2 × 3 mm for speaker (qty 6); M2 × 3 mm for touchpad (qty 2); M2 × 3 mm for unspecified (qty 28, blue); M2 × 3 mm for wireless card (qty 2); M2.5 × 4 mm for I/O board (qty 1); M2.5 × 4 mm for display (qty 8); M2.5 × 4 mm for display bezel (qty 2); M2.5 × 4 mm for hinge (qty 6); M2.5 × 4 mm for optical drive (qty 1); M2.5 × 4 mm for palm rest (qty 10); M2.5 × 4 mm for system board (qty 3); M2.5 × 4 mm for unspecified (qty 32); M2.5 × 5 mm for display bezel (qty 2); M2.5 × 5 mm for unspecified (qty 2); M2.5 × 6.5 mm for display (qty 4); M2.5 × 6.5 mm for he.
- How long are the screws in Acer Aspire 8940?
- The records range from 3 to 6.5 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 Aspire 8940?
- 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 Aspire 8940?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M2.5 x 4mm and M2.5 x 5mm, which match lengths in the records above.