Lenovo V155-15API screw size
M2 / M2.5 · 3 to 7 mm long
Lenovo V155-15API takes M2 and M2.5 metric screws in lengths from 3 to 7 mm.
There are 11 separate fitment records for it, including display (qty 8, black, Phillips) (M2), optical drive (qty 1, black, Phillips) (M2) and system board (qty 2, black, Phillips) (M2), plus 8 more in the table below.
Head and drive, as the sources state them: Phillips drive.
11 of the 11 records are marked confirmed, drawn from 1 source (download.lenovo.com).
M2 means a 2 mm nominal diameter with a 0.4 mm thread pitch. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable.
Lenovo V155-15API 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 | Phillips | Display (qty 8, black, Phillips)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Optical drive (qty 1, black, Phillips)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | System board (qty 2, black, Phillips)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Wireless card (qty 1, black, Phillips)black finish | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | Phillips | Battery (qty 5, black, Phillips)black finish | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | Phillips | Fan (qty 1, black, Phillips)black finish | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | Phillips | Hard drive (qty 4, black, Phillips)black finish | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | Phillips | SSD (qty 1, black, Phillips)black finish | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | Palm rest (qty 4, silver, Phillips) | Confirmed |
| M2.5 | 7 mm | 0.45 mm | not stated | Phillips | Base cover (qty 12, black, Phillips)black finish | Confirmed |
| M2.5 | 7 mm | 0.45 mm | not stated | Phillips | Optical drive (qty 1, black, Phillips)black finish | Confirmed |
Fitment records and sources
Display (qty 8, black, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Optical drive (qty 1, black, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
System board (qty 2, black, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Wireless card (qty 1, black, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Battery (qty 5, black, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Fan (qty 1, black, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hard drive (qty 4, black, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
SSD (qty 1, black, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 4, silver, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Base cover (qty 12, black, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Optical drive (qty 1, black, Phillips)
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 screw measures about 2 mm with calipers (usually a hair under). This device also uses M2.5, 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 3–7 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source names a Phillips drive. For comparison, standard M2 heads take PH0 (Phillips) or T6 (Torx), or a 1.5 mm hex key.
- 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
- M.2 SSD mounting screws (M2 x 3mm) are frequently mislabeled generically as 'M.2 screws' which can be confused with the M2 metric thread designation — they do coincide numerically here but are conceptually distinct (M.2 = card format, M2 = thread size).
- 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.
- 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.
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M2.5 x 5mm Phillips Wafer Head Screw for Action Camera Protective Housing - Pack of 50 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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More in Laptops & PCs
The same screw also fits
Devices whose records share a thread with Lenovo V155-15API, closest length match first.
- Lenovo ThinkPad X130e also M2 × 3 mm
- Dell Latitude C640 also M2 × 3 mm
- Lenovo ThinkPad X200 Tablet screw kit also M2 × 3 mm
- HP 200 G2a also M2 × 3 mm
- Lenovo ThinkPad E135 also M2 × 3 mm
- Lenovo ThinkPad P70 also M2 × 3 mm
- HP ProBook / Dell Precision M.2 SSD mounting screw also M2 × 3 mm
- Dell Inspiron 13 5320 also M2 × 3 mm
Questions about Lenovo V155-15API screws
- What size screw does Lenovo V155-15API use?
- M2 × 3 mm for display (qty 8, black, Phillips); M2 × 3 mm for optical drive (qty 1, black, Phillips); M2 × 3 mm for system board (qty 2, black, Phillips); M2 × 3 mm for wireless card (qty 1, black, Phillips); M2 × 6 mm for battery (qty 5, black, Phillips); M2 × 6 mm for fan (qty 1, black, Phillips); M2 × 6 mm for hard drive (qty 4, black, Phillips); M2 × 6 mm for SSD (qty 1, black, Phillips); M2.5 × 5 mm for palm rest (qty 4, silver, Phillips); M2.5 × 7 mm for base cover (qty 12, black, Phillips); M2.5 × 7 mm for optical drive (qty 1, black, Phillips).
- How long are the screws in Lenovo V155-15API?
- The records range from 3 to 7 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 V155-15API?
- The source lists a Phillips drive. Standard M2 heads otherwise take PH0 (Phillips) or T6 (Torx), or 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 V155-15API?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M2 x 6mm and M2.5 x 5mm, which match lengths in the records above.




