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Lenovo ThinkPad T15g Gen 1 screw size

M2 / M2.5 · 2 to 8 mm long

Lenovo ThinkPad T15g Gen 1 takes M2 and M2.5 metric screws in lengths from 2 to 8 mm.

There are 16 separate fitment records for it, including touchpad (qty 4, flat, black) (M2), display (qty 2, flat, silver) (M2) and I/O board (qty 1, flat, black) (M2), plus 13 more in the table below.

16 of the 16 records are marked confirmed, drawn from 1 source (download.lenovo.com).

M2 means a 2 mm nominal diameter with a 0.4 mm thread pitch. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable.

Lenovo ThinkPad T15g Gen 1 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 mm0.4 mmnot statednot statedTouchpad (qty 4, flat, black)black finishConfirmed
M22.5 mm0.4 mmnot statednot statedDisplay (qty 2, flat, silver)Confirmed
M23 mm0.4 mmnot statednot statedI/O board (qty 1, flat, black)black finishConfirmed
M23 mm0.4 mmnot statednot statedCard reader (qty 2, flat, black)black finishConfirmed
M23 mm0.4 mmnot statednot statedHinge (qty 2, flat, black,silver)black finishConfirmed
M23 mm0.4 mmnot statednot statedMemory (qty 1, flat, black)black finishConfirmed
M23 mm0.4 mmnot statednot statedPower button (qty 1, flat, black)black finishConfirmed
M23 mm0.4 mmnot statednot statedSpeaker (qty 2, flat, black)black finishConfirmed
M23 mm0.4 mmnot statednot statedSystem board (qty 3, flat, black)black finishConfirmed
M23 mm0.4 mmnot statednot statedUnspecified (qty 1, flat, black)black finishConfirmed
M23 mm0.4 mmnot statednot statedWireless card (qty 4, flat, black)black finishConfirmed
M28 mm0.4 mmnot statednot statedBattery (qty 3, flat, black)black finishConfirmed
M28 mm0.4 mmnot statednot statedUnspecified (qty 4, flat, black)black finishConfirmed
M2.53.5 mm0.45 mmnot statednot statedDisplay (qty 6, flat, black)black finishConfirmed
M2.54 mm0.45 mmnot statednot statedHinge (qty 4, flat, black)black finishConfirmed
M2.58 mm0.45 mmnot statednot statedDisplay (qty 4, flat, black)black finishConfirmed

Fitment records and sources

M22 mmconfirmed

Touchpad (qty 4, flat, black)

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

M22.5 mmconfirmed

Display (qty 2, flat, silver)

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

M23 mmconfirmed

I/O board (qty 1, flat, black)

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

M23 mmconfirmed

Card reader (qty 2, flat, black)

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

M23 mmconfirmed

Hinge (qty 2, flat, black,silver)

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

M23 mmconfirmed

Memory (qty 1, flat, black)

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

M23 mmconfirmed

Power button (qty 1, flat, black)

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

M23 mmconfirmed

Speaker (qty 2, flat, black)

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

M23 mmconfirmed

System board (qty 3, flat, black)

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

M23 mmconfirmed

Unspecified (qty 1, flat, black)

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

M23 mmconfirmed

Wireless card (qty 4, flat, black)

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

M28 mmconfirmed

Battery (qty 3, flat, black)

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

M28 mmconfirmed

Unspecified (qty 4, flat, black)

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

M2.53.5 mmconfirmed

Display (qty 6, flat, black)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.54 mmconfirmed

Hinge (qty 4, flat, black)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.58 mmconfirmed

Display (qty 4, flat, black)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

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). This device also uses M2.5, so measure each screw rather than assuming they match.
  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 2–8 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 / M2.5

  • The standard M.2 SSD screw is M2 x 3mm, but some laptops and handhelds use non-standard lengths or head shapes.
  • 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).
  • Dell/HP/Lenovo manuals often list screws only by torque or head shape, so community teardowns are needed for diameter.
  • Nylon-coated M2.5 screws (ThinkPad Edge) are thread-locking; plain replacements work loose over time.

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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The same screw also fits

Devices whose records share a thread with Lenovo ThinkPad T15g Gen 1, closest length match first.

Questions about Lenovo ThinkPad T15g Gen 1 screws

What size screw does Lenovo ThinkPad T15g Gen 1 use?
M2 × 2 mm for touchpad (qty 4, flat, black); M2 × 2.5 mm for display (qty 2, flat, silver); M2 × 3 mm for I/O board (qty 1, flat, black); M2 × 3 mm for card reader (qty 2, flat, black); M2 × 3 mm for hinge (qty 2, flat, black,silver); M2 × 3 mm for memory (qty 1, flat, black); M2 × 3 mm for power button (qty 1, flat, black); M2 × 3 mm for speaker (qty 2, flat, black); M2 × 3 mm for system board (qty 3, flat, black); M2 × 3 mm for unspecified (qty 1, flat, black); M2 × 3 mm for wireless card (qty 4, flat, black); M2 × 8 mm for battery (qty 3, flat, black); M2 × 8 mm for unspecified (qty 4, flat, black); M2.5 × 3.5 mm for display (qty 6, flat, black); M2.5 × 4 mm for hinge (qty 4, flat, black).
How long are the screws in Lenovo ThinkPad T15g Gen 1?
The records range from 2 to 8 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 T15g Gen 1?
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 T15g Gen 1?
TechSpareWarehouse (our own store) lists M2 x 2mm, M2 x 2.5mm and M2 x 3mm, which match lengths in the records above.