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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.

ThreadLengthPitchHeadDriveWhere it goesStatus
M23 mm0.4 mmnot statedPhillipsDisplay (qty 8, black, Phillips)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsOptical drive (qty 1, black, Phillips)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsSystem board (qty 2, black, Phillips)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsWireless card (qty 1, black, Phillips)black finishConfirmed
M26 mm0.4 mmnot statedPhillipsBattery (qty 5, black, Phillips)black finishConfirmed
M26 mm0.4 mmnot statedPhillipsFan (qty 1, black, Phillips)black finishConfirmed
M26 mm0.4 mmnot statedPhillipsHard drive (qty 4, black, Phillips)black finishConfirmed
M26 mm0.4 mmnot statedPhillipsSSD (qty 1, black, Phillips)black finishConfirmed
M2.55 mm0.45 mmnot statedPhillipsPalm rest (qty 4, silver, Phillips)Confirmed
M2.57 mm0.45 mmnot statedPhillipsBase cover (qty 12, black, Phillips)black finishConfirmed
M2.57 mm0.45 mmnot statedPhillipsOptical drive (qty 1, black, Phillips)black finishConfirmed

Fitment records and sources

M23 mmconfirmed

Display (qty 8, black, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M23 mmconfirmed

Optical drive (qty 1, black, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M23 mmconfirmed

System board (qty 2, black, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M23 mmconfirmed

Wireless card (qty 1, black, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M26 mmconfirmed

Battery (qty 5, black, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M26 mmconfirmed

Fan (qty 1, black, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M26 mmconfirmed

Hard drive (qty 4, black, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M26 mmconfirmed

SSD (qty 1, black, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M2.55 mmconfirmed

Palm rest (qty 4, silver, Phillips)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.57 mmconfirmed

Base cover (qty 12, black, Phillips)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.57 mmconfirmed

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

  1. 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.
  2. 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.
  3. 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.
  4. Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
  5. The records span 3–7 mm, which means different positions take different lengths — match each hole to its own screw.
  6. 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.
  7. 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.

Pitch gauge · Screw size finder · Torque guide

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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The same screw also fits

Devices whose records share a thread with Lenovo V155-15API, closest length match first.

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.