Dell Inspiron 14 5400 2-in-1 screw size
M1.6 / M2 / M2.5 · 2 to 5 mm long
If you are replacing a screw on Dell Inspiron 14 5400 2-in-1, the thread is M1.6, M2 and M2.5 in lengths from 2 to 5 mm.
There are 14 separate fitment records for it, including SSD (qty 1) (M1.6), fan (qty 2) (M2) and system board (qty 2) (M2), plus 11 more in the table below.
14 of the 14 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 Inspiron 14 5400 2-in-1 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 | not stated | SSD (qty 1) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | Fan (qty 2) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | System board (qty 2) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | Touchpad (qty 3) | 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 | Battery (qty 5) | 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 | Power button (qty 2) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | SSD (qty 1) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | USB-C board (qty 2) | 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 | Base cover (qty 6) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Display (qty 3) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Hinge (qty 5) | Confirmed |
Fitment records and sources
SSD (qty 1)
pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5
Fan (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
System board (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Touchpad (qty 3)
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
Battery (qty 5)
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
Power button (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
USB-C board (qty 2)
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
Base cover (qty 6)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 3)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hinge (qty 5)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
How to check the screw before you buy
- Laptop covers and brackets often mix two or three lengths of the same thread, so lay the screws out in the order they came out (a magnetic mat or a sheet of paper with the hole pattern drawn on it works).
- 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 2–5 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard 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.
- 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.
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 Inspiron 14 5400 2-in-1, closest length match first.
- Lenovo ideapad 320-15ABR Touch also M2 × 3 mm
- Lenovo ideapad 330S-14AST also M1.6 × 2.5 mm
- Lenovo ThinkPad L510 also M2 × 2 mm
- Lenovo Ideapad 100 15IBD also M2 × 3 mm
- Dell Precision 5560 also M1.6 × 2.5 mm
- Lenovo YOGA 710-15ISK also M2 × 3 mm
- HP Compaq 6830s also M2 × 2 mm
- Lenovo ThinkPad X13 Yoga Gen 4 also M1.6 × 2.5 mm
Questions about Dell Inspiron 14 5400 2-in-1 screws
- What size screw does Dell Inspiron 14 5400 2-in-1 use?
- M1.6 × 2.5 mm for SSD (qty 1); M2 × 2 mm for fan (qty 2); M2 × 2 mm for system board (qty 2); M2 × 2 mm for touchpad (qty 3); M2 × 3 mm for I/O board (qty 1); M2 × 3 mm for battery (qty 5); M2 × 3 mm for DC-in (qty 1); M2 × 3 mm for power button (qty 2); M2 × 3 mm for SSD (qty 1); M2 × 3 mm for USB-C board (qty 2); M2 × 3 mm for wireless card (qty 1); M2 × 4 mm for base cover (qty 6); M2.5 × 5 mm for display (qty 3); M2.5 × 5 mm for hinge (qty 5).
- How long are the screws in Dell Inspiron 14 5400 2-in-1?
- 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 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 Inspiron 14 5400 2-in-1?
- 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 Inspiron 14 5400 2-in-1?
- TechSpareWarehouse (our own store) lists M2 x 2mm, M2 x 3mm and M2 x 4mm, which match lengths in the records above.