Lenovo ThinkBook 14 / 15 Gen 2 screw size
M2.5 · 3 to 5 mm long
Lenovo ThinkBook 14 / 15 Gen 2 takes M2.5 metric screws in lengths from 3 to 5 mm.
It is listed for base cover and keyboard bezel screws per the hardware maintenance manual.
This entry is marked reported and comes from documents.cdn.ifixit.com.
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.
Lenovo ThinkBook 14 / 15 Gen 2 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 | 3–5 mm | 0.45 mm | not stated | not stated | base cover and keyboard bezel screws per the hardware maintenance manual | Reported |
Fitment records and sources
base cover and keyboard bezel screws per the hardware maintenance manual
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
How to check the screw before you buy
- Keep long and short screws apart when opening a console; the shell positions differ.
- 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 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 M2.5 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
- Dell/HP/Lenovo manuals often list screws only by torque or head shape, so community teardowns are needed for diameter.
- M2.5 pitch is 0.45mm vs M3's 0.5mm and M2's 0.4mm — forcing the wrong one strips plastic bosses instantly.
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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25x M2.5 x 3mm Phillips Screws for Acer Nitro 5 SSD M.2 WiFi Card
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M2.5 x 4mm Screws for Lenovo IdeaPad 5 Pro 14 Display Hinge 10-Pack Black
$4.99 -
M2.5 x 4mm Screws for Lenovo IdeaPad 5 Pro 14 System Board Hinge 10-Pack Black
$4.99
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M2.5 x 5mm Screws Compatible with Dell XPS 14 9440 Display Assembly 10-Pack
$4.99 -
M2.5 x 5mm Phillips Wafer Head Screw for Action Camera Protective Housing - Pack of 50 Black
$4.79 each · min. 2
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Dell Inspiron 15 3520 Replacement Screws Sold Individually – M2 x 3mm, M2 x 5mm, M2.5 x 5mm, M3 x 3mm Phillips Wafer Head, Black
$0.10Choose size -
Dell Latitude 5430 Replacement Screws Sold Individually – M2 x 2.5mm, M2 x 3mm, M2 x 5mm, M2.5 x 5mm Phillips Wafer Head, Black
$0.10Choose size
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M2.5 x 3mm Phillips Wafer Head Screws, Low Profile – 10-Pack Black
$4.99Choose size
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Devices whose records share a thread with Lenovo ThinkBook 14 / 15 Gen 2, closest length match first.
- Dell Latitude 3490 also M2.5 × 3–5 mm
- Dell Latitude 3190 / 3190 2-in-1 also M2.5 × 3–5 mm
- Lenovo ThinkBook 14 2-in-1 Gen 6 also M2.5 × 3–5 mm
- Docking station internal boards also M2.5 × 5 mm
- Acer Aspire 4230 also M2.5 × 3 mm
- HP Mini 5103 also M2.5 × 5 mm
- Dell Inspiron 14 3420 also M2.5 × 5 mm
- HP ProBook 450 G1 also M2.5 × 3 mm
Questions about Lenovo ThinkBook 14 / 15 Gen 2 screws
- What size screw does Lenovo ThinkBook 14 / 15 Gen 2 use?
- M2.5 × 3–5 mm for base cover and keyboard bezel screws per the hardware maintenance manual.
- How long are the screws in Lenovo ThinkBook 14 / 15 Gen 2?
- 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 M2.5 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 Lenovo ThinkBook 14 / 15 Gen 2?
- 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 Lenovo ThinkBook 14 / 15 Gen 2?
- TechSpareWarehouse (our own store) lists M2.5 x 3mm, M2.5 x 4mm and M2.5 x 5mm, which match lengths in the records above.