Dell Vostro 13 5390 screw size
M1.6 / M2 / M2.5 · 2 to 6 mm long
Dell Vostro 13 5390 takes M1.6, M2 and M2.5 metric screws in lengths from 2 to 6 mm.
There are 19 separate fitment records for it, including power button (qty 1) (M1.6), touchpad (qty 3) (M1.6) and battery (qty 1) (M1.6), plus 16 more in the table below.
19 of the 19 records are marked confirmed, drawn from 1 source (dl.dell.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.
Dell Vostro 13 5390 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 mm | 0.35 mm | not stated | not stated | Power button (qty 1) | Confirmed |
| M1.6 | 2 mm | 0.35 mm | not stated | not stated | Touchpad (qty 3) | Confirmed |
| M1.6 | 4 mm | 0.35 mm | not stated | not stated | Battery (qty 1) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | Battery (qty 4) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | Hinge (qty 2) | Confirmed |
| M2 | 2.5 mm | 0.4 mm | not stated | not stated | SSD (qty 1) | Confirmed |
| M2 | 2.5 mm | 0.4 mm | not stated | not stated | Wireless card (qty 1) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | I/O board (qty 1) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | DC-in (qty 1) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Fan (qty 2) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Display (qty 1) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Hinge (qty 1) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | System board (qty 1) | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | not stated | Base cover (qty 4) | Confirmed |
| M2.5 | 2.5 mm | 0.45 mm | not stated | not stated | I/O board (qty 1) | Confirmed |
| M2.5 | 2.5 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 1) | Confirmed |
| M2.5 | 3.5 mm | 0.45 mm | not stated | not stated | Hinge (qty 2) | Confirmed |
| M2.5 | 3.5 mm | 0.45 mm | not stated | not stated | USB-C board (qty 1) | Confirmed |
Fitment records and sources
Power button (qty 1)
pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5
Touchpad (qty 3)
pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5
Battery (qty 1)
pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5
Battery (qty 4)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hinge (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
SSD (qty 1)
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
I/O board (qty 1)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
DC-in (qty 1)
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
Display (qty 1)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hinge (qty 1)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
System board (qty 1)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Base cover (qty 4)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
I/O board (qty 1)
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 1)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hinge (qty 2)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
USB-C board (qty 1)
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 M1.6 screw measures about 1.6 mm with calipers (usually a hair under). This device also uses M2 / M2.5, 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 2–6 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M1.6 heads take PH00 for Phillips and T4–T5 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 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
- M1.6 is the most common laptop-internal micro screw after M2 — Dell XPS keyboards specifically call out M1.6 x 1.5mm, and generic M2 substitutes strip the bracket.
- 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.
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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M2 x 2mm Phillips Flat Head Screw for HP EliteBook 840/846 G6 Laptop Repair - Pack of 100 Black
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M2 x 2.5mm Screws for Dell XPS 14 9440 M.2 SSD Drive – 10-Pack Black
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M2 x 2.5mm Screws for ASUS ROG Strix G17 G713 SSD WiFi Touchpad 10-Pack Black
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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 Dell Vostro 13 5390, closest length match first.
- Lenovo ThinkPad L15 Gen 1 also M2 × 2.5 mm
- Lenovo ideapad 310-14IAP also M2 × 3 mm
- HP EliteBook 835 13 inch G11 also M1.6 × 2 mm
- Lenovo ideapad 310S-15ISK also M2 × 2.5 mm
- Lenovo ideapad FLEX 5-1470 Lenovo ideapad FLEX 5-1570 also M2 × 2.5 mm
- Lenovo ThinkPad X30 also M2 × 3 mm
- Lenovo ThinkPad E435 also M2 × 2 mm
- HP ProBook 4415s also M2 × 2 mm
Questions about Dell Vostro 13 5390 screws
- What size screw does Dell Vostro 13 5390 use?
- M1.6 × 2 mm for power button (qty 1); M1.6 × 2 mm for touchpad (qty 3); M1.6 × 4 mm for battery (qty 1); M2 × 2 mm for battery (qty 4); M2 × 2 mm for hinge (qty 2); M2 × 2.5 mm for SSD (qty 1); M2 × 2.5 mm for wireless card (qty 1); M2 × 3 mm for I/O board (qty 1); M2 × 3 mm for DC-in (qty 1); M2 × 3 mm for fan (qty 2); M2 × 4 mm for display (qty 1); M2 × 4 mm for hinge (qty 1); M2 × 4 mm for system board (qty 1); M2 × 6 mm for base cover (qty 4); M2.5 × 2.5 mm for I/O board (qty 1); M2.5 × 2.5 mm for hinge (qty 4); M2.5 × 3.5 mm for display (qty 1); M2.5 × 3.5 mm for hinge (qty 2); M2.5 × 3.5 mm for USB-C board (qty 1).
- How long are the screws in Dell Vostro 13 5390?
- The records range from 2 to 6 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 Dell Vostro 13 5390?
- The sources do not name the drive. For M1.6, Phillips heads normally take PH00 and Torx heads T4–T5; socket heads take 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 Dell Vostro 13 5390?
- TechSpareWarehouse (our own store) lists M1.6 x 4mm, M2 x 2mm and M2 x 2.5mm, which match lengths in the records above.



