Lenovo B480 screw size
M2 / M2.5 / M3 · 3 to 8 mm long
Our records put Lenovo B480 on M2, M2.5 and M3 screws in lengths from 3 to 8 mm.
There are 18 separate fitment records for it, including DC-in (qty 2, flat, black) (M2), hard drive (qty 1, flat, black) (M2) and optical drive (qty 2, flat, black) (M2), plus 15 more in the table below.
18 of the 18 records are marked confirmed, drawn from 1 source (download.lenovo.com).
An M2 screw is 2 mm in diameter with a 0.4 mm pitch, tapped with a 1.6 mm drill; imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable.
Lenovo B480 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 | DC-in (qty 2, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Hard drive (qty 1, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Optical drive (qty 2, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Palm rest (qty 3, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Power button (qty 1, flat, silver) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | SSD (qty 1, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Unspecified (qty 2, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Wireless card (qty 1, flat, black)black finish | Confirmed |
| M2 | 3.5 mm | 0.4 mm | not stated | not stated | Display (qty 4, flat, black,white)black finish | Confirmed |
| M2 | 3.5 mm | 0.4 mm | not stated | not stated | Hinge (qty 4, flat, white) | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | not stated | I/O board (qty 2, flat, black)black finish | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | not stated | Palm rest (qty 1, flat, black)black finish | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | not stated | System board (qty 2, flat, black)black finish | Confirmed |
| M2.5 | 5.7 mm | 0.45 mm | not stated | not stated | Speaker (qty 4, flat, black)black finish | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | not stated | Display (qty 4, flat, silver) | Confirmed |
| M2.5 | 8 mm | 0.45 mm | not stated | not stated | Keyboard (qty 3, flat, black)black finish | Confirmed |
| M2.5 | 8 mm | 0.45 mm | not stated | not stated | Palm rest (qty 11, flat, black)black finish | Confirmed |
| M3 | 4 mm | 0.5 mm | not stated | not stated | Hard drive (qty 4, flat, silver) | Confirmed |
Fitment records and sources
DC-in (qty 2, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hard drive (qty 1, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Optical drive (qty 2, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 3, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Power button (qty 1, flat, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
SSD (qty 1, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 2, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Wireless card (qty 1, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 4, flat, black,white)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hinge (qty 4, flat, white)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
I/O board (qty 2, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 1, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
System board (qty 2, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Speaker (qty 4, flat, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 4, flat, silver)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Keyboard (qty 3, flat, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 11, flat, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 4, flat, silver)
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.
- Dell/HP/Lenovo manuals often list screws only by torque or head shape, so community teardowns are needed for diameter.
- Thorlabs' 16mm cage system standard plates use dual 4-40 (UNC) and M3 taps on the same plate (e.g., SP01), so metric and imperial fasteners are both valid depending on the region/kit purchased.
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 x 3mm Screws for Dell XPS 13 9340 Base Cover SSD Shield 10-Pack Black
$4.99 -
10x M2 x 3mm Phillips Screws for Lenovo ThinkPad X131e Chromebook WiFi SSD
$4.99 -
M2 x 6mm Phillips Wafer Head Screw for HP Omen Gaming Laptop Repair - Pack of 100 Black
$7.99 -
M2 x 6mm Phillips Wafer Head Screw for Audiophile Headphone Headband Repair - Pack of 50 Black
$4.99 -
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 -
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 -
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 Lenovo B480, closest length match first.
- Lenovo ideapad 330E-15AST also M2 × 3 mm
- Lenovo IdeaPad S540-15IWL GTX also M2 × 3 mm
- Lenovo ideapad 700-17ISK also M2 × 3 mm
- Lenovo ideapad 330H-17AST also M2 × 3 mm
- Lenovo V110-15AST also M2 × 3 mm
- Lenovo ThinkPad T460 also M2 × 3 mm
- Dell XPS 17 9710 also M2.5 × 6 mm
- Lenovo ThinkPad A485 also M2 × 3 mm
Questions about Lenovo B480 screws
- What size screw does Lenovo B480 use?
- M2 × 3 mm for DC-in (qty 2, flat, black); M2 × 3 mm for hard drive (qty 1, flat, black); M2 × 3 mm for optical drive (qty 2, flat, black); M2 × 3 mm for palm rest (qty 3, flat, black); M2 × 3 mm for power button (qty 1, flat, silver); M2 × 3 mm for SSD (qty 1, flat, black); M2 × 3 mm for unspecified (qty 2, flat, black); M2 × 3 mm for wireless card (qty 1, flat, black); M2 × 3.5 mm for display (qty 4, flat, black,white); M2 × 3.5 mm for hinge (qty 4, flat, white); M2 × 6 mm for I/O board (qty 2, flat, black); M2 × 6 mm for palm rest (qty 1, flat, black); M2 × 6 mm for system board (qty 2, flat, black); M2.5 × 5.7 mm for speaker (qty 4, flat, black); M2.5 × 6 mm for display (qty 4, flat, silv.
- How long are the screws in Lenovo B480?
- 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 Lenovo B480?
- 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 Lenovo B480?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M2 x 6mm and M2.5 x 6mm, which match lengths in the records above.


