How long are the screws in Lenovo ThinkPad X1 Carbon Gen 12?

The records range from 2 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 Lenovo ThinkPad X1 Carbon Gen 12?

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 Lenovo ThinkPad X1 Carbon Gen 12?

TechSpareWarehouse (our own store) lists M2 x 2mm, M2 x 2.5mm and M2 x 3mm, which match lengths in the records above.

Lenovo ThinkPad X1 Carbon Gen 12 screw size

M2 · 2 to 4 mm long

Our records put Lenovo ThinkPad X1 Carbon Gen 12 on M2 screws in lengths from 2 to 4 mm.

It is listed for 19x M2x2.0 fine-pitch, 6x M2x2.0 big-hat, 10x M2x2.8 and 2x M2x4.0 screws.

This entry is marked confirmed and comes from download.lenovo.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.

Lenovo ThinkPad X1 Carbon Gen 12 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	2–4 mm	0.4 mm	not stated	not stated	19x M2x2.0 fine-pitch, 6x M2x2.0 big-hat, 10x M2x2.8 and 2x M2x4.0 screws	Confirmed

Fitment records and sources

M22.0-4.0mmconfirmed

19x M2x2.0 fine-pitch, 6x M2x2.0 big-hat, 10x M2x2.8 and 2x M2x4.0 screws

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

Source

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). 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 2–4 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.
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.

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.

More in Laptops & PCs

2.5in drive trays & caddies Acer / MSI laptops Acer 5510/4020 series I/O and misc chassis screws Acer 7520 / 7220 Acer Aspire / Swift bottom cover Acer Aspire / Swift M.2 SSD Acer Aspire 1310 Acer Aspire 1410 Acer Aspire 1420P Acer Aspire 1650 Acer Aspire 1680 Acer Aspire 1690

Browse all 2799 in Laptops & PCs →

The same screw also fits

Devices whose records share a thread with Lenovo ThinkPad X1 Carbon Gen 12, closest length match first.

Lenovo ideapad 330S-14AST D also M2 × 3 mm
Dell Inspiron 11 3195 2-in-1 also M2 × 2 mm
Dell Inspiron 14 7466 also M2 × 2 mm
Dell XPS M1530 also M2 × 2 mm
Lenovo FLEX 6-14ARR also M2 × 2 mm
Lenovo ideapad 130-15AST also M2 × 2.5 mm
Dell Inspiron 13 5300 also M2 × 2 mm
Dell XPS 13 Plus 9320 also M2 × 3 mm

Questions about Lenovo ThinkPad X1 Carbon Gen 12 screws

What size screw does Lenovo ThinkPad X1 Carbon Gen 12 use?: M2 × 2–4 mm for 19x M2x2.0 fine-pitch, 6x M2x2.0 big-hat, 10x M2x2.8 and 2x M2x4.0 screws.
How long are the screws in Lenovo ThinkPad X1 Carbon Gen 12?: The records range from 2 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 Lenovo ThinkPad X1 Carbon Gen 12?: 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 Lenovo ThinkPad X1 Carbon Gen 12?: TechSpareWarehouse (our own store) lists M2 x 2mm, M2 x 2.5mm and M2 x 3mm, which match lengths in the records above.

Heads up: shipping delay