HP Compaq N620C screw size
M2 / M2.5 · 2.5 to 7 mm long
Our records put HP Compaq N620C on M2 and M2.5 screws in lengths from 2.5 to 7 mm.
There are 6 separate fitment records for it, including bracket (qty 6, Phillips) (M2), fan (qty 3, Phillips) (M2) and unspecified (qty 6, Torx T8) (M2), plus 3 more in the table below.
Head and drive, as the sources state them: Phillips and Torx T8 drives.
6 of the 6 records are marked confirmed, drawn from 1 source (tim.id.au).
An M2 screw is 2 mm in diameter with a 0.4 mm pitch, tapped with a 1.6 mm drill; imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable.
HP Compaq N620C 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 | 4 mm | 0.4 mm | not stated | Phillips | Bracket (qty 6, Phillips) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | Phillips | Fan (qty 3, Phillips) | Confirmed |
| M2 | 7 mm | 0.4 mm | not stated | Torx T8 | Unspecified (qty 6, Torx T8) | Confirmed |
| M2.5 | 2.5 mm | 0.45 mm | not stated | Phillips | Unspecified (Phillips) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | Fan (Phillips) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | Wireless card (qty 2, Phillips) | Confirmed |
Fitment records and sources
Bracket (qty 6, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Fan (qty 3, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 6, Torx T8)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Fan (Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Wireless card (qty 2, Phillips)
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 2.5–7 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source names a Phillips drive. For comparison, standard M2 heads take PH0 (Phillips) or T6 (Torx), or a 1.5 mm hex key.
- 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.
- M2.5 and M3 look the same to the naked eye — you need calipers on the shank to tell them apart.
- M2.5 pitch is 0.45mm vs M3's 0.5mm and M2's 0.4mm — forcing the wrong one strips plastic bosses instantly.
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 4mm Phillips Wafer Head Machine Screws Black 50-Pack Laptop SSD Repair
$4.49 each · min. 2
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M2 x 4mm Screws for Dell Latitude 5530 SSD Type-C Bracket 10-Pack Black
$4.99
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M2.5 x 5mm Screws Compatible with Dell XPS 14 9440 Display Assembly 10-Pack
$4.99 -
M2.5 x 5mm Phillips Wafer Head Screw for Action Camera Protective Housing - Pack of 50 Black
$4.79 each · min. 2
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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
$0.10Choose size -
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
$0.10Choose size
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Dell Latitude 5530 Replacement Screws Sold Individually – M2 x 3mm, M2 x 4mm, M2.5 x 5mm Phillips Wafer Head, Black
$0.10Choose size -
HP EliteBook 840 G8 Replacement Screws Sold Individually – M1.6 x 3mm, M2 x 2.5mm, M2 x 4mm, M2.5 x 4mm Phillips Wafer Head, Black
$0.10Choose size
More in Laptops & PCs
The same screw also fits
Devices whose records share a thread with HP Compaq N620C, closest length match first.
- Lenovo ideapad 330-15AST D also M2.5 × 2.5 mm
- HP ProBook 4710s also M2 × 4 mm
- Dell Latitude 9520 also M2.5 × 5 mm
- Lenovo Yoga S730-13IWL also M2 × 4 mm
- HP 255 G4 also M2.5 × 2.5 mm
- HP ProBook 455 G8 also M2 × 4 mm
- Dell Precision 5530 also M2 × 4 mm
- Lenovo ideapad 330-14IGM also M2.5 × 2.5 mm
Questions about HP Compaq N620C screws
- What size screw does HP Compaq N620C use?
- M2 × 4 mm for bracket (qty 6, Phillips); M2 × 4 mm for fan (qty 3, Phillips); M2 × 7 mm for unspecified (qty 6, Torx T8); M2.5 × 2.5 mm for unspecified (Phillips); M2.5 × 5 mm for fan (Phillips); M2.5 × 5 mm for wireless card (qty 2, Phillips).
- How long are the screws in HP Compaq N620C?
- The records range from 2.5 to 7 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 HP Compaq N620C?
- The source lists a Phillips and Torx T8 drive. Standard M2 heads otherwise take PH0 (Phillips) or T6 (Torx), or 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 HP Compaq N620C?
- TechSpareWarehouse (our own store) lists M2 x 4mm and M2.5 x 5mm, which match lengths in the records above.