Dell Precision 3561 screw size
M2 / M2.5 · 2 to 5 mm long
Our records put Dell Precision 3561 on M2 and M2.5 screws in lengths from 2 to 5 mm.
There are 29 separate fitment records for it, including keyboard (qty 18) (M2), power button (qty 2) (M2) and SSD (qty 2) (M2), plus 26 more in the table below.
29 of the 29 records are marked confirmed, drawn from 1 source (dl.dell.com).
For reference, M2 is 2 mm across the threads at 0.4 mm pitch. The imperial size people confuse it with: #2-56 UNC (2.18 mm) is close but not interchangeable.
Dell Precision 3561 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 | 2 mm | 0.4 mm | not stated | not stated | Keyboard (qty 18) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | Power button (qty 2) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | SSD (qty 2) | Confirmed |
| M2 | 2.5 mm | 0.4 mm | not stated | not stated | Card reader (qty 3) | Confirmed |
| M2 | 2.5 mm | 0.4 mm | not stated | not stated | Power button (qty 2) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | LED board (qty 1) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Battery (qty 2) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Bracket (qty 2) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Card reader (qty 3) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Chassis/frame (qty 17) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Display (qty 2) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Heat sink (qty 6) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | SSD (qty 4) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | System board (qty 4) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Unspecified (qty 3) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Wireless card (qty 1) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Battery (qty 3) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Fan (qty 2) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Hard drive (qty 4) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | USB-C board (qty 3) | Confirmed |
| M2 | 5 mm | 0.4 mm | not stated | not stated | Chassis/frame (qty 2) | Confirmed |
| M2 | 5 mm | 0.4 mm | not stated | not stated | Unspecified (qty 2) | Confirmed |
| M2 | 5 mm | 0.4 mm | not stated | not stated | USB-C board (qty 3) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | not stated | Display (qty 2) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | not stated | Hinge (qty 4) | Confirmed |
| M2.5 | 3.5 mm | 0.45 mm | not stated | not stated | Display (qty 4) | Confirmed |
| M2.5 | 3.5 mm | 0.45 mm | not stated | not stated | Hinge (qty 1) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Display (qty 4) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Hinge (qty 6) | Confirmed |
Fitment records and sources
Keyboard (qty 18)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Power button (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
SSD (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Card reader (qty 3)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Power button (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
LED board (qty 1)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Battery (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Bracket (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Card reader (qty 3)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Chassis/frame (qty 17)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Heat sink (qty 6)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
SSD (qty 4)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
System board (qty 4)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 3)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Wireless card (qty 1)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Battery (qty 3)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Fan (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hard drive (qty 4)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
USB-C board (qty 3)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Chassis/frame (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
USB-C board (qty 3)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 2)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hinge (qty 4)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 4)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hinge (qty 1)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 4)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hinge (qty 6)
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 2–5 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 / 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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More in Laptops & PCs
The same screw also fits
Devices whose records share a thread with Dell Precision 3561, closest length match first.
- Lenovo ideapad 720S-14IKB also M2 × 2 mm
- Lenovo ThinkPad S330 also M2 × 2 mm
- HP ENVY x360 13.3 inch 2-in-1 also M2 × 2 mm
- Lenovo ThinkPad X280 also M2 × 5 mm
- Lenovo V110-17IKB also M2 × 3 mm
- Dell Vostro 15 3591 also M2 × 2 mm
- Lenovo ideapad 320R-15IKB also M2 × 3 mm
- Dell Inspiron 2600 also M2 × 3 mm
Questions about Dell Precision 3561 screws
- What size screw does Dell Precision 3561 use?
- M2 × 2 mm for keyboard (qty 18); M2 × 2 mm for power button (qty 2); M2 × 2 mm for SSD (qty 2); M2 × 2.5 mm for card reader (qty 3); M2 × 2.5 mm for power button (qty 2); M2 × 3 mm for LED board (qty 1); M2 × 3 mm for battery (qty 2); M2 × 3 mm for bracket (qty 2); M2 × 3 mm for card reader (qty 3); M2 × 3 mm for chassis/frame (qty 17); M2 × 3 mm for display (qty 2); M2 × 3 mm for heat sink (qty 6); M2 × 3 mm for SSD (qty 4); M2 × 3 mm for system board (qty 4); M2 × 3 mm for unspecified (qty 3); M2 × 3 mm for wireless card (qty 1); M2 × 4 mm for battery (qty 3); M2 × 4 mm for fan (qty 2); M2 × 4 mm for hard drive (qty 4); M2 × 4 mm for USB-C board (qty 3); M2 × 5 mm for chassis/frame (qty 2).
- How long are the screws in Dell Precision 3561?
- The records range from 2 to 5 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 Dell Precision 3561?
- 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 Dell Precision 3561?
- TechSpareWarehouse (our own store) lists M2 x 2mm, M2 x 2.5mm and M2 x 3mm, which match lengths in the records above.



