Laptop 2.5in drive caddy screw size
M2 · 3 to 4 mm long
The screws used on Laptop 2.5in drive caddy are M2 in lengths from 3 to 4 mm.
It is listed for holds the hard drive into its metal caddy bracket.
This entry is marked reported and comes from ifixit.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.
Laptop 2.5in drive caddy 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 | 3–4 mm | 0.4 mm | not stated | not stated | holds the hard drive into its metal caddy bracket | Reported |
Fitment records and sources
holds the hard drive into its metal caddy bracket
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
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 M2 screw measures about 2 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- 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 3–4 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
- The standard M.2 SSD screw is M2 x 3mm, but some laptops and handhelds use non-standard lengths or head shapes.
- 2.5in and 3.5in drive mounting is M3 or #6-32, never M2 — one of the most common mislabels in screw kits.
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 Screws for Dell Latitude 5530 SSD Type-C Bracket 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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Dell Latitude 5530 Replacement Screws Sold Individually – M2 x 3mm, M2 x 4mm, M2.5 x 5mm Phillips Wafer Head, Black
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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
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Devices whose records share a thread with Laptop 2.5in drive caddy, closest length match first.
- Lenovo Ideapad 100-15IBY also M2 × 3 mm
- Lenovo ThinkPad 380XD also M2 × 3.7 mm
- Acer TravelMate 5220G also M2 × 3 mm
- Dell Precision M4300 also M2 × 3 mm
- Lenovo IdeaPad Flex Pro-13IKB also M2 × 3 mm
- Lenovo Slim 7 14ILL10 also M2 × 3 mm
- Acer Aspire 4250 also M2 × 3 mm
- HP 6710b also M2 × 3 mm
Questions about Laptop 2.5in drive caddy screws
- What size screw does Laptop 2.5in drive caddy use?
- M2 × 3–4 mm for holds the hard drive into its metal caddy bracket.
- How long are the screws in Laptop 2.5in drive caddy?
- The records range from 3 to 4 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 Laptop 2.5in drive caddy?
- 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 Laptop 2.5in drive caddy?
- TechSpareWarehouse (our own store) lists M2 x 3mm and M2 x 4mm, which match lengths in the records above.