Acer Aspire 4020 laptop chassis/LCD screws screw size
M2 · 3 to 5 mm long
If you are replacing a screw on Acer Aspire 4020 laptop chassis/LCD screws, the thread is M2 in lengths from 3 to 5 mm.
The record covers full screw list table includes 'SCREW M2.0X3.0-I-NI-NYLOK' and 'SCREW M2.0X5-I-NI-NYLOK' part numbers used across LCD/hinge assembly.
This entry is marked confirmed and comes from manualsdump.com.
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 4020 laptop chassis/LCD screws 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 | 3–5 mm | 0.4 mm | not stated | not stated | Full screw list table includes 'SCREW M2.0X3.0-I-NI-NYLOK' and 'SCREW M2.0X5-I-NI-NYLOK' part numbers used across LCD/hinge assembly | Confirmed |
Fitment records and sources
Full screw list table includes 'SCREW M2.0X3.0-I-NI-NYLOK' and 'SCREW M2.0X5-I-NI-NYLOK' part numbers used across LCD/hinge assembly
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
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). If yours measures noticeably more or less, it is a different thread.
- 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 3–5 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
- Most consumer gadget teardowns (robot vacuums, toothbrushes, e-readers, VR headsets) list only the driver bit, not the thread — measure before ordering.
- The standard M.2 SSD screw is M2 x 3mm, but some laptops and handhelds use non-standard lengths or head shapes.
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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M2 x 5mm Phillips Wafer Head Screw for Dell G16 7630 Gaming Laptop Repair - Pack of 100 Black
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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
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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
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Devices whose records share a thread with Acer Aspire 4020 laptop chassis/LCD screws, closest length match first.
- Lenovo Z410 also M2 × 3 mm
- Lenovo YOGA 700-11ISK also M2 × 4.4 mm
- Dell Latitude 5511 also M2 × 3 mm
- Dell Precision 5690 also M2 × 3 mm
- HP 241 G1 also M2 × 3 mm
- Lenovo ThinkPad R51e also M2 × 3 mm
- Lenovo LOQ 15ARP10E also M2 × 3.5 mm
- Dell Inspiron 16 5640 also M2 × 3.5 mm
Questions about Acer Aspire 4020 laptop chassis/LCD screws screws
- What size screw does Acer Aspire 4020 laptop chassis/LCD screws use?
- M2 × 3–5 mm for full screw list table includes 'SCREW M2.0X3.0-I-NI-NYLOK' and 'SCREW M2.0X5-I-NI-NYLOK' part numbers used across LCD/hinge assembly.
- How long are the screws in Acer Aspire 4020 laptop chassis/LCD screws?
- The records range from 3 to 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 4020 laptop chassis/LCD screws?
- 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 4020 laptop chassis/LCD screws?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M2 x 4mm and M2 x 5mm, which match lengths in the records above.