Acer TravelMate 4020 screw size
M2.5 · 6 mm long
Acer TravelMate 4020 takes M2.5 metric screws, 6 mm long.
There are 4 separate fitment records for it, including I/O bezel (qty 2) (M2.5), base cover (qty 14) (M2.5) and hard drive (qty 1) (M2.5), plus 1 more in the table below.
4 of the 4 records are marked confirmed, drawn from 1 source (tim.id.au).
M2.5 means a 2.5 mm nominal diameter with a 0.45 mm thread pitch. Imperial look-alike: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in.
Acer TravelMate 4020 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 |
|---|---|---|---|---|---|---|
| M2.5 | 6 mm | 0.45 mm | not stated | not stated | I/O bezel (qty 2) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | not stated | Base cover (qty 14) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | not stated | Hard drive (qty 1) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | not stated | Heat sink (qty 1) | Confirmed |
Fitment records and sources
I/O bezel (qty 2)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Base cover (qty 14)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 1)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Heat sink (qty 1)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
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 M2.5 screw measures about 2.5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.45 mm from one thread crest to the next (22.22 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 record states 6 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- Driver: the source does not name the drive. Standard M2.5 heads take PH1 for Phillips and T8 for Torx, and a 2 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 M2.5 is about 45-70 N·cm into metal threads and 20-35 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2.5
- M2.5 pitch is 0.45mm vs M3's 0.5mm and M2's 0.4mm — forcing the wrong one strips plastic bosses instantly.
- M2.5 and M3 look the same to the naked eye — you need calipers on the shank to tell them apart.
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.
-
M2.5 x 6mm Laptop Motherboard Replacement Screws Wafer Head 10-Pack Black
$4.99 -
10x M2.5 x 6mm Phillips Screws for Lenovo ThinkPad X131e Chromebook LCD Hinge
$4.99
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ASUS ROG Strix G15 G513R Replacement Screws Sold Individually – M1.6 x 3mm, M2 x 2.5mm, M2 x 3mm, M2.5 x 6mm Phillips Wafer Head, Black
$0.10Choose size
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ASUS ROG Strix G17 G713 Replacement Screws Sold Individually – M1.6 x 3mm, M2 x 2.5mm, M2 x 3mm, M2.5 x 6mm Phillips Wafer Head, Black
$0.10Choose size
More in Laptops & PCs
The same screw also fits
Devices whose records share a thread with Acer TravelMate 4020, closest length match first.
- Lenovo ThinkPad E14 Gen 7 also M2.5 × 6 mm
- HP ProBook 6440b also M2.5 × 6 mm
- Dell Inspiron 11 3180 also M2.5 × 6 mm
- Acer Aspire 7715Z also M2.5 × 6 mm
- ASUS S62 also M2.5 × 6 mm
- Dell G3 15 3579 also M2.5 × 6 mm
- Lenovo ThinkPad Yoga 460 also M2.5 × 6 mm
- Lenovo ThinkPad E14 Gen 8 also M2.5 × 6 mm
Questions about Acer TravelMate 4020 screws
- What size screw does Acer TravelMate 4020 use?
- M2.5 × 6 mm for I/O bezel (qty 2); M2.5 × 6 mm for base cover (qty 14); M2.5 × 6 mm for hard drive (qty 1); M2.5 × 6 mm for heat sink (qty 1).
- How long are the screws in Acer TravelMate 4020?
- The record gives 6 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M2.5 screw?
- 0.45 mm (coarse), which is the standard pitch for M2.5 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.05 mm and the normal clearance hole is 2.9 mm.
- What screwdriver do I need for Acer TravelMate 4020?
- The sources do not name the drive. For M2.5, Phillips heads normally take PH1 and Torx heads T8; socket heads take a 2 mm hex key.
- Can I use an imperial screw instead of M2.5?
- No. Imperial look-alike: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in. Use a true M2.5 screw so it does not cross-thread or strip the hole.
- Where can I buy replacement screws for Acer TravelMate 4020?
- TechSpareWarehouse (our own store) lists M2.5 x 6mm, which matches the length in the records above.