M.2 heatsink / shield assemblies screw size
M2 · 3 to 6 mm long
If you are replacing a screw on M.2 heatsink / shield assemblies, the thread is M2 in lengths from 3 to 6 mm.
Where it is used: small Phillips screws holding the heatsink cover down.
Head and drive, as the source states them: Phillips drive.
This entry is marked reported and comes from forums.tomshardware.com.
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.
M.2 heatsink / shield assemblies 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 | 3–6 mm | 0.4 mm | not stated | Phillips | small Phillips screws holding the heatsink cover down | Reported |
Fitment records and sources
small Phillips screws holding the heatsink cover down
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
How to check the screw before you buy
- Take one original screw out first and measure it before ordering; the record above tells you the thread, the original screw tells you the exact length and head.
- 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 3–6 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
- Packaging/labeling equipment manuals (e.g., cab print-and-apply applicators) mix M2 through M6 fasteners across a single machine for very different assemblies (sensors vs. frame vs. drive) — do not generalize one thread size to 'the machine' as a whole; cite the specific subassembly.
- M2 (2.00mm, 0.4mm pitch) is NOT the same as #2-56 UNC (2.18mm) — close enough to cross-thread and strip if forced.
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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Devices whose records share a thread with M.2 heatsink / shield assemblies, closest length match first.
- TFV12 rebuildable vape tank grub/set screws also M2 × 3 mm
- Nintendo Switch battery shield also M2 × 3 mm
- ASUS / MSI / Gigabyte / ASRock motherboards also M2 × 3 mm
- DJI Flame Wheel F450 / F550 also M2 × 4.5 mm
- Raspberry Pi HATs & cases also M2 × 4–6 mm
- Xbox wireless controllers also M2 × 6 mm
- Dell XPS 13 9350 / 9360 / 9365 also M2 × 3 mm
- Motorola MOTOTRBO XPR5350 / XPR5550 mobile radio also M2 × 6 mm
Questions about M.2 heatsink / shield assemblies screws
- What size screw does M.2 heatsink / shield assemblies use?
- M2 × 3–6 mm for small Phillips screws holding the heatsink cover down.
- How long are the screws in M.2 heatsink / shield assemblies?
- The records range from 3 to 6 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 M.2 heatsink / shield assemblies?
- The source lists a Phillips 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 M.2 heatsink / shield assemblies?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M2 x 4mm and M2 x 5mm, which match lengths in the records above.