Dell Inspiron 14 5420 screw size
M1.6 / M2 / M2.5 · 1.8 to 7 mm long
Dell Inspiron 14 5420 takes M1.6, M2 and M2.5 metric screws in lengths from 1.8 to 7 mm.
There are 26 separate fitment records for it, including memory (qty 3) (M1.6), touchpad (qty 3) (M1.6) and memory (qty 2) (M2), plus 23 more in the table below.
26 of the 26 records are marked confirmed, drawn from 1 source (dell.com).
For reference, M1.6 is 1.6 mm across the threads at 0.35 mm pitch. The imperial size people confuse it with: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent.
Dell Inspiron 14 5420 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 | Memory (qty 3) | Confirmed |
| M1.6 | 2 mm | 0.35 mm | not stated | not stated | Touchpad (qty 3) | Confirmed |
| M2 | 1.8 mm | 0.4 mm | not stated | not stated | Memory (qty 2) | Confirmed |
| M2 | 1.8 mm | 0.4 mm | not stated | not stated | SSD (qty 1) | Confirmed |
| M2 | 1.8 mm | 0.4 mm | not stated | not stated | System board (qty 2) | Confirmed |
| M2 | 1.8 mm | 0.4 mm | not stated | not stated | Touchpad (qty 2) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | Memory (qty 3) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | SSD (qty 1) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | System board (qty 3) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | I/O board (qty 2) | 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 | Bracket (qty 1) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Fan (qty 2) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Memory (qty 5) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Power button (qty 1) | 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 | Wireless card (qty 1) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Base cover (qty 5) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Memory (qty 5) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | USB-C board (qty 2) | Confirmed |
| M2 | 7 mm | 0.4 mm | not stated | not stated | Base cover (qty 2, captive)captive | Confirmed |
| M2 | 7 mm | 0.4 mm | not stated | not stated | Memory (qty 2, captive)captive | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Hinge (qty 4) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Memory (qty 4) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Display (qty 5) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Memory (qty 5) | Confirmed |
Fitment records and sources
Memory (qty 3)
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
Memory (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
System board (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Touchpad (qty 2)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Memory (qty 3)
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
System board (qty 3)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
I/O board (qty 2)
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
Bracket (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
Memory (qty 5)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Power button (qty 1)
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
Base cover (qty 5)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Memory (qty 5)
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
Base cover (qty 2, captive)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Memory (qty 2, captive)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hinge (qty 4)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Memory (qty 4)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 5)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Memory (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
- 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 1.8–7 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 5420, closest length match first.
- Acer Aspire 4920G also M2 × 3 mm
- Lenovo ThinkPad R50/p also M2 × 3 mm
- HP ProBook 440 G0 also M2 × 2 mm
- Framework Laptop 12 bezel and hinge fasteners also M1.6 × 2 mm
- Lenovo ThinkPad E15 also M2 × 1.8 mm
- Dell Inspiron 17 5770 also M2 × 2 mm
- HP EliteBook 8560w also M2 × 2 mm
- Lenovo Y50-80 also M2 × 2 mm
Questions about Dell Inspiron 14 5420 screws
- What size screw does Dell Inspiron 14 5420 use?
- M1.6 × 2 mm for memory (qty 3); M1.6 × 2 mm for touchpad (qty 3); M2 × 1.8 mm for memory (qty 2); M2 × 1.8 mm for SSD (qty 1); M2 × 1.8 mm for system board (qty 2); M2 × 1.8 mm for touchpad (qty 2); M2 × 2 mm for memory (qty 3); M2 × 2 mm for SSD (qty 1); M2 × 2 mm for system board (qty 3); M2 × 3 mm for I/O board (qty 2); M2 × 3 mm for battery (qty 5); M2 × 3 mm for bracket (qty 1); M2 × 3 mm for fan (qty 2); M2 × 3 mm for memory (qty 5); M2 × 3 mm for power button (qty 1); M2 × 3 mm for SSD (qty 1); M2 × 3 mm for wireless card (qty 1); M2 × 4 mm for base cover (qty 5); M2 × 4 mm for memory (qty 5); M2 × 4 mm for USB-C board (qty 2); M2 × 7 mm for base cover (qty 2, captive); M2 × 7 mm for .
- How long are the screws in Dell Inspiron 14 5420?
- The records range from 1.8 to 7 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 5420?
- 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 5420?
- TechSpareWarehouse (our own store) lists M2 x 2mm, M2 x 3mm and M2 x 4mm, which match lengths in the records above.



