Lenovo IdeaPad S110 screw size
M2 / M3 · 1.7 to 6 mm long
Our records put Lenovo IdeaPad S110 on M2 and M3 screws in lengths from 1.7 to 6 mm.
There are 10 separate fitment records for it, including keyboard (qty 3, flat, black) (M2), hard drive (qty 1, flat, black) (M2) and heat sink (qty 4, flat, black) (M2), plus 7 more in the table below.
10 of the 10 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 IdeaPad S110 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 | 1.7 mm | 0.4 mm | not stated | not stated | Keyboard (qty 3, 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 | Heat sink (qty 4, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Hinge (qty 6, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Speaker (qty 4, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | System board (qty 2, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Unspecified (qty 4, flat, black)black finish | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | not stated | Base cover (qty 7, flat, black)black finish | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | not stated | Heat sink (qty 1, flat, black)black finish | Confirmed |
| M3 | 3 mm | 0.5 mm | not stated | not stated | Unspecified (qty 2, flat, black)black finish | Confirmed |
Fitment records and sources
Keyboard (qty 3, 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
Heat sink (qty 4, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hinge (qty 6, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Speaker (qty 4, 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
Unspecified (qty 4, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Base cover (qty 7, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Heat sink (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 0.5 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 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 1.7–6 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 / M3
- The standard M.2 SSD screw is M2 x 3mm, but some laptops and handhelds use non-standard lengths or head shapes.
- M2 (2.00mm, 0.4mm pitch) is NOT the same as #2-56 UNC (2.18mm) — close enough to cross-thread and strip if forced.
- 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.
- 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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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 IdeaPad S110, closest length match first.
- Lenovo YOGA 710-14IKB also M2 × 3 mm
- Lenovo ThinkPad R61i also M2 × 3 mm
- HP EliteBook 820 G1 also M2 × 3 mm
- HP Envy x360 16 inch 2-in-1 also M2 × 3 mm
- Lenovo ThinkPad S440 also M2 × 3 mm
- Dell Vostro 15 3583 also M2 × 3 mm
- Acer Aspire 4920 also M2 × 3 mm
- Dell G15 5515 also M2 × 6 mm
Questions about Lenovo IdeaPad S110 screws
- What size screw does Lenovo IdeaPad S110 use?
- M2 × 1.7 mm for keyboard (qty 3, flat, black); M2 × 3 mm for hard drive (qty 1, flat, black); M2 × 3 mm for heat sink (qty 4, flat, black); M2 × 3 mm for hinge (qty 6, flat, black); M2 × 3 mm for speaker (qty 4, flat, black); M2 × 3 mm for system board (qty 2, flat, black); M2 × 3 mm for unspecified (qty 4, flat, black); M2 × 6 mm for base cover (qty 7, flat, black); M2 × 6 mm for heat sink (qty 1, flat, black); M3 × 3 mm for unspecified (qty 2, flat, black).
- How long are the screws in Lenovo IdeaPad S110?
- The records range from 1.7 to 6 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 IdeaPad S110?
- 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 IdeaPad S110?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M2 x 6mm and M3 x 3mm, which match lengths in the records above.




