Lenovo ideapad 330S-15ARR U screw size
M1.6 / M2 / M2.5 / M3 · 2.3 to 5.5 mm long
Our records put Lenovo ideapad 330S-15ARR U on M1.6, M2, M2.5 and M3 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).
M1.6 means a 1.6 mm nominal diameter with a 0.35 mm thread pitch. Imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent.
Lenovo ideapad 330S-15ARR U 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 |
|---|---|---|---|---|---|---|
| M1.6 | 2.5 mm | 0.35 mm | not stated | Phillips | Display (qty 4, black, Phillips)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | I/O board (qty 2, black, Phillips)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Battery (qty 5, black, Phillips)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Fan (qty 3, black, Phillips)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Hard drive (qty 4, black, Phillips)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | SSD (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 | 5.5 mm | 0.4 mm | not stated | Phillips | Base cover (qty 10, black, Phillips)black finish | Confirmed |
| M2.5 | 2.3 mm | 0.45 mm | not stated | Phillips | Display (qty 8, black, Phillips)black finish | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | Palm rest (qty 6, black, Phillips)black finish | Confirmed |
| M3 | 3 mm | 0.5 mm | not stated | Phillips | Hard drive (qty 4, black, Phillips)black finish | Confirmed |
Fitment records and sources
Display (qty 4, black, Phillips)
pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5
I/O board (qty 2, 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 3, 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
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
Base cover (qty 10, black, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 8, black, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 6, black, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
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
- 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 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.
- 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.
- 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 2.3–5.5 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 M1.6 heads take PH00 (Phillips) or T4–T5 (Torx), or a 1.5 mm hex key.
- 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.
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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More in Laptops & PCs
The same screw also fits
Devices whose records share a thread with Lenovo ideapad 330S-15ARR U, closest length match first.
- HP OMEN 16 inch Gaming PC 16-ap0xxx also M1.6 × 2.5 mm
- Lenovo ThinkPad W700ds also M2 × 3 mm
- Dell Inspiron 15 5593 also M2 × 3 mm
- Dell Inspiron 15 5583 also M2 × 3 mm
- Lenovo G400s also M2 × 3 mm
- MSI MS-15F4 chassis gaming laptop also M2 × 3 mm
- Lenovo S20-30 Touch also M2 × 3 mm
- Lenovo ThinkPad R60 also M3 × 3 mm
Questions about Lenovo ideapad 330S-15ARR U screws
- What size screw does Lenovo ideapad 330S-15ARR U 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 U?
- 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 U?
- 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 U?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M2.5 x 5mm and M3 x 3mm, which match lengths in the records above.





