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M.2 NVMe SSD to motherboard standoff screw size

M2 · 2 to 3 mm long

Our records put M.2 NVMe SSD to motherboard standoff on M2 screws in lengths from 2 to 3 mm.

The record covers sunbeamTech's M.2 screw guide states 'An M.2 screw is a small M2 x 3mm machine screw used to secure an M.2 SSD into its slot on a motherboard or expansion card.'.

This entry is marked confirmed and comes from sunbeamtech.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.

M.2 NVMe SSD to motherboard standoff 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.

ThreadLengthPitchHeadDriveWhere it goesStatus
M22–3 mm0.4 mmnot statednot statedSunbeamTech's M.2 screw guide states 'An M.2 screw is a small M2 x 3mm machine screw used to secure an M.2 SSD into its slot on a motherboard or expansion card.'Confirmed

Fitment records and sources

M23mm (also seen 2mm/2.5mm)confirmed

SunbeamTech's M.2 screw guide states 'An M.2 screw is a small M2 x 3mm machine screw used to secure an M.2 SSD into its slot on a motherboard or expansion card.'

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

How to check the screw before you buy

  1. 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.
  2. 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.
  3. 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.
  4. Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
  5. The records span 2–3 mm, which means different positions take different lengths — match each hole to its own screw.
  6. 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.
  7. 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.
  • 'M2' is sometimes used loosely by resellers to mean 'roughly 2mm' without a real ISO metric thread; only counted here when the source datasheet explicitly states 'M2' thread.

Pitch gauge · Screw size finder · Torque guide

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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Questions about M.2 NVMe SSD to motherboard standoff screws

What size screw does M.2 NVMe SSD to motherboard standoff use?
M2 × 2–3 mm for sunbeamTech's M.2 screw guide states 'An M.2 screw is a small M2 x 3mm machine screw used to secure an M.2 SSD into its slot on a motherboard or expansion card.'.
How long are the screws in M.2 NVMe SSD to motherboard standoff?
The records range from 2 to 3 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 NVMe SSD to motherboard standoff?
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 M.2 NVMe SSD to motherboard standoff?
TechSpareWarehouse (our own store) lists M2 x 2mm, M2 x 2.5mm and M2 x 3mm, which match lengths in the records above.