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Lenovo ideapad 330S-15ARR screw size

M1.6 / M2 / M2.5 / M3 · 2.3 to 5.5 mm long

Lenovo ideapad 330S-15ARR takes M1.6, M2, M2.5 and M3 metric screws in lengths from 2.3 to 5.5 mm.

There are 12 separate fitment records for it, including display (qty 4, black, Phillips) (M1.6), I/O board (qty 2, black, Phillips) (M2) and battery (qty 5, black, Phillips) (M2), plus 9 more in the table below.

Head and drive, as the sources state them: Phillips drive.

12 of the 12 records are marked confirmed, drawn from 1 source (download.lenovo.com).

For reference, M1.6 is 1.6 mm across the threads at 0.35 mm pitch. The imperial size people confuse it with: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent.

Lenovo ideapad 330S-15ARR 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
M1.62.5 mm0.35 mmnot statedPhillipsDisplay (qty 4, black, Phillips)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsI/O board (qty 2, black, Phillips)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsBattery (qty 5, black, Phillips)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsFan (qty 3, black, Phillips)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsHard drive (qty 4, black, Phillips)black finishConfirmed
M23 mm0.4 mmnot statedPhillipsSSD (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
M25.5 mm0.4 mmnot statedPhillipsBase cover (qty 10, black, Phillips)black finishConfirmed
M2.52.3 mm0.45 mmnot statedPhillipsDisplay (qty 8, black, Phillips)black finishConfirmed
M2.55 mm0.45 mmnot statedPhillipsPalm rest (qty 6, black, Phillips)black finishConfirmed
M33 mm0.5 mmnot statedPhillipsHard drive (qty 4, black, Phillips)black finishConfirmed

Fitment records and sources

M1.62.5 mmconfirmed

Display (qty 4, black, Phillips)

pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5

M23 mmconfirmed

I/O board (qty 2, black, Phillips)

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

M23 mmconfirmed

Battery (qty 5, black, Phillips)

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

M23 mmconfirmed

Fan (qty 3, black, Phillips)

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

M23 mmconfirmed

Hard drive (qty 4, black, Phillips)

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

M23 mmconfirmed

SSD (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

M25.5 mmconfirmed

Base cover (qty 10, black, Phillips)

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

M2.52.3 mmconfirmed

Display (qty 8, black, Phillips)

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

M2.55 mmconfirmed

Palm rest (qty 6, black, Phillips)

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

M33 mmconfirmed

Hard drive (qty 4, black, Phillips)

pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10

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 M1.6 screw measures about 1.6 mm with calipers (usually a hair under). This device also uses M2 / M2.5 / M3, so measure each screw rather than assuming they match.
  3. Pitch: 0.35 mm from one thread crest to the next (28.57 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 2.3–5.5 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 M1.6 heads take PH00 (Phillips) or T4–T5 (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 M1.6 is about 12-20 N·cm into metal threads and 6-10 N·cm into plastic bosses; snug it up and stop.

Common mix-ups with M1.6 / M2 / M2.5 / M3

  • 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).
  • Dell/HP/Lenovo manuals often list screws only by torque or head shape, so community teardowns are needed for diameter.
  • 3.5in desktop and enterprise hard drives are 6-32 UNC imperial, not M3 - only the 2.5in form factor is metric.

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 ideapad 330S-15ARR, closest length match first.

Questions about Lenovo ideapad 330S-15ARR screws

What size screw does Lenovo ideapad 330S-15ARR use?
M1.6 × 2.5 mm for display (qty 4, black, Phillips); M2 × 3 mm for I/O board (qty 2, black, Phillips); M2 × 3 mm for battery (qty 5, black, Phillips); M2 × 3 mm for fan (qty 3, black, Phillips); M2 × 3 mm for hard drive (qty 4, black, Phillips); M2 × 3 mm for SSD (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 × 5.5 mm for base cover (qty 10, black, Phillips); M2.5 × 2.3 mm for display (qty 8, black, Phillips); M2.5 × 5 mm for palm rest (qty 6, black, Phillips); M3 × 3 mm for hard drive (qty 4, black, Phillips).
How long are the screws in Lenovo ideapad 330S-15ARR?
The records range from 2.3 to 5.5 mm depending on the position, so match each screw to its own hole.
What is the thread pitch of an M1.6 screw?
0.35 mm (coarse), which is the standard pitch for M1.6 machine screws; a 0.2 mm fine pitch exists but is uncommon. The tap drill is 1.25 mm and the normal clearance hole is 1.8 mm.
What screwdriver do I need for Lenovo ideapad 330S-15ARR?
The source lists a Phillips drive. Standard M1.6 heads otherwise take PH00 (Phillips) or T4–T5 (Torx), or a 1.5 mm hex key.
Can I use an imperial screw instead of M1.6?
No. Imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent. Use a true M1.6 screw so it does not cross-thread or strip the hole.
Where can I buy replacement screws for Lenovo ideapad 330S-15ARR?
TechSpareWarehouse (our own store) lists M2 x 3mm, M2.5 x 5mm and M3 x 3mm, which match lengths in the records above.