Acer Aspire 4820T screw size
M2 / M2.5 / M3 · 2 to 6.5 mm long
The screws used on Acer Aspire 4820T are M2, M2.5 and M3 in lengths from 2 to 6.5 mm.
There are 22 separate fitment records for it, including LED board (qty 2) (M2), display (qty 4) (M2) and optical drive (qty 2) (M2), plus 19 more in the table below.
22 of the 22 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 4820T 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 | LED board (qty 2) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Display (qty 4) | 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 | Unspecified (qty 6) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Wireless card (qty 1) | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | not stated | Keyboard (qty 2, blue) | Confirmed |
| M2.5 | 2 mm | 0.45 mm | not stated | not stated | Unspecified (qty 1) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | not stated | Display (qty 4) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | not stated | Unspecified (qty 4) | 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 | DC-in (qty 1) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Display (qty 2) | 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 | Keyboard (qty 2) | 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 | Speaker (qty 1) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | System board (qty 1) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Unspecified (qty 5, blue) | 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 | Keyboard (qty 10) | Confirmed |
| M2.5 | 6.5 mm | 0.45 mm | not stated | not stated | Unspecified (qty 14) | Confirmed |
| M3 | 4 mm | 0.5 mm | not stated | not stated | Hard drive (qty 2) | Confirmed |
Fitment records and sources
LED board (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 4)
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
Unspecified (qty 6)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Wireless card (qty 1)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Keyboard (qty 2, blue)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 1)
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
Unspecified (qty 4)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
I/O board (qty 1)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
DC-in (qty 1)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 2)
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
Keyboard (qty 2)
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
Speaker (qty 1)
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
Unspecified (qty 5, blue)
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 10)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Unspecified (qty 14)
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
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 2–6.5 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
- 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 Aspire 4820T, closest length match first.
- HP EliteBook Revolve 810 G2 also M2 × 3 mm
- HP EliteBook 8530w also M2 × 3 mm
- Lenovo ThinkPad X13 Gen 2 also M2 × 3 mm
- Lenovo ThinkPad L16 Gen 1 also M2 × 3 mm
- Lenovo ThinkPad E490 also M2 × 3 mm
- Acer Emachines G627 also M2 × 3 mm
- Dell Inspiron 9100 also M2 × 3 mm
- Dell Inspiron 14 3482 also M2 × 3 mm
Questions about Acer Aspire 4820T screws
- What size screw does Acer Aspire 4820T use?
- M2 × 3 mm for LED board (qty 2); M2 × 3 mm for display (qty 4); M2 × 3 mm for optical drive (qty 2); M2 × 3 mm for unspecified (qty 6); M2 × 3 mm for wireless card (qty 1); M2 × 6 mm for keyboard (qty 2, blue); M2.5 × 2 mm for unspecified (qty 1); M2.5 × 3 mm for display (qty 4); M2.5 × 3 mm for unspecified (qty 4); M2.5 × 4 mm for I/O board (qty 1); M2.5 × 4 mm for DC-in (qty 1); M2.5 × 4 mm for display (qty 2); M2.5 × 4 mm for display bezel (qty 2); M2.5 × 4 mm for keyboard (qty 2); M2.5 × 4 mm for optical drive (qty 1); M2.5 × 4 mm for speaker (qty 1); M2.5 × 4 mm for system board (qty 1); M2.5 × 4 mm for unspecified (qty 5, blue); M2.5 × 6.5 mm for display (qty 4); M2.5 × 6.5 mm for keyb.
- How long are the screws in Acer Aspire 4820T?
- The records range from 2 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 4820T?
- 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 4820T?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M2 x 6mm and M2.5 x 3mm, which match lengths in the records above.