Acer Aspire 5940G screw size
M2 / M2.5 / M3 · 3 to 8 mm long
Acer Aspire 5940G takes M2, M2.5 and M3 metric screws in lengths from 3 to 8 mm.
There are 17 separate fitment records for it, including optical drive (qty 2) (M2), unspecified (qty 8) (M2) and wireless card (qty 2) (M2), plus 14 more in the table below.
17 of the 17 records are marked confirmed, drawn from 1 source (tim.id.au).
M2 means a 2 mm nominal diameter with a 0.4 mm thread pitch. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable.
Acer Aspire 5940G 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 | Optical drive (qty 2) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Unspecified (qty 8) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Wireless card (qty 2) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | not stated | I/O board (qty 1) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | not stated | Card reader (qty 4) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | not stated | Hinge (qty 2) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | not stated | Speaker (qty 4) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | not stated | System board (qty 1) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | not stated | Touchpad (qty 2) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | not stated | Unspecified (qty 23) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Display (qty 4) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Keyboard (qty 1) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Optical drive (qty 1) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Unspecified (qty 12, blue) | Confirmed |
| M2.5 | 8 mm | 0.45 mm | not stated | not stated | Unspecified (qty 18) | Confirmed |
| M3 | 3 mm | 0.5 mm | not stated | not stated | Hard drive (qty 4) | Confirmed |
| M3 | 3 mm | 0.5 mm | not stated | not stated | Unspecified (qty 4) | Confirmed |
Fitment records and sources
Optical drive (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 8)
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
Card reader (qty 4)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hinge (qty 2)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Speaker (qty 4)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
System board (qty 1)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Touchpad (qty 2)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Unspecified (qty 23)
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
Keyboard (qty 1)
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
Unspecified (qty 12, blue)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Unspecified (qty 18)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 4)
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 3–8 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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- Acer Aspire 5942G also M2 × 3 mm
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- Lenovo IdeaPad 110-14AST also M3 × 3 mm
- Dell Latitude 7490 also M2 × 3 mm
- Dell Latitude 100l also M2 × 3 mm
- HP ProBook 6465b also M2 × 3 mm
- Lenovo ideapad 300-14IBR also M2 × 3 mm
- Dell Inspiron B130 also M2 × 3 mm
Questions about Acer Aspire 5940G screws
- What size screw does Acer Aspire 5940G use?
- M2 × 3 mm for optical drive (qty 2); M2 × 3 mm for unspecified (qty 8); M2 × 3 mm for wireless card (qty 2); M2.5 × 3 mm for I/O board (qty 1); M2.5 × 3 mm for card reader (qty 4); M2.5 × 3 mm for hinge (qty 2); M2.5 × 3 mm for speaker (qty 4); M2.5 × 3 mm for system board (qty 1); M2.5 × 3 mm for touchpad (qty 2); M2.5 × 3 mm for unspecified (qty 23); M2.5 × 5 mm for display (qty 4); M2.5 × 5 mm for keyboard (qty 1); M2.5 × 5 mm for optical drive (qty 1); M2.5 × 5 mm for unspecified (qty 12, blue); M2.5 × 8 mm for unspecified (qty 18); M3 × 3 mm for hard drive (qty 4); M3 × 3 mm for unspecified (qty 4).
- How long are the screws in Acer Aspire 5940G?
- The records range from 3 to 8 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 5940G?
- 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 5940G?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M2.5 x 3mm and M2.5 x 5mm, which match lengths in the records above.