Lenovo ThinkPad T430u screw size
M2 / M2.5 · 2 to 6.5 mm long
Our records put Lenovo ThinkPad T430u on M2 and M2.5 screws in lengths from 2 to 6.5 mm.
There are 18 separate fitment records for it, including system board (qty 6, flat) (M2), DC-in (qty 1, wafer, silver) (M2) and display (qty 6, wafer, silver) (M2), plus 15 more in the table below.
Head and drive, as the sources state them: wafer (thin) head.
18 of the 18 records are marked confirmed, drawn from 1 source (download.lenovo.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.
Lenovo ThinkPad T430u 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 mm | 0.4 mm | not stated | not stated | System board (qty 6, flat) | Confirmed |
| M2 | 2.5 mm | 0.4 mm | Wafer (thin) head | not stated | DC-in (qty 1, wafer, silver) | Confirmed |
| M2 | 2.5 mm | 0.4 mm | Wafer (thin) head | not stated | Display (qty 6, wafer, silver) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Card reader (qty 2, flat, silver) | Confirmed |
| M2 | 3 mm | 0.4 mm | Wafer (thin) head | not stated | Hinge (qty 6, wafer, silver) | Confirmed |
| M2 | 3 mm | 0.4 mm | Wafer (thin) head | not stated | Palm rest (qty 6, flat,wafer, silver,black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | Wafer (thin) head | not stated | Power button (qty 2, wafer,flat, black,silver)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | Wafer (thin) head | not stated | Speaker (qty 2, wafer, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | Wafer (thin) head | not stated | SSD (qty 1, wafer, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | Wafer (thin) head | not stated | Wireless card (qty 1, wafer, black)black finish | Confirmed |
| M2 | 5 mm | 0.4 mm | Wafer (thin) head | not stated | Battery (qty 5, wafer, black)black finish | Confirmed |
| M2 | 5 mm | 0.4 mm | Wafer (thin) head | not stated | Hard drive (qty 4, wafer, black)black finish | Confirmed |
| M2 | 5 mm | 0.4 mm | Wafer (thin) head | not stated | Keyboard (qty 1, wafer, black)black finish | Confirmed |
| M2 | 5 mm | 0.4 mm | Wafer (thin) head | not stated | Palm rest (qty 1, wafer, black)black finish | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | not stated | Hard drive (qty 4, flat, black)black finish | Confirmed |
| M2 | 6 mm | 0.4 mm | Wafer (thin) head | not stated | Palm rest (qty 1, wafer, silver) | Confirmed |
| M2.5 | 6.5 mm | 0.45 mm | Wafer (thin) head | not stated | Display (qty 5, wafer, black)black finish | Confirmed |
| M2.5 | 6.5 mm | 0.45 mm | Wafer (thin) head | not stated | Palm rest (qty 2, wafer, black)black finish | Confirmed |
Fitment records and sources
System board (qty 6, flat)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
DC-in (qty 1, wafer, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 6, wafer, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Card reader (qty 2, flat, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hinge (qty 6, wafer, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 6, flat,wafer, silver,black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Power button (qty 2, wafer,flat, black,silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Speaker (qty 2, wafer, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
SSD (qty 1, wafer, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Wireless card (qty 1, wafer, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Battery (qty 5, wafer, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hard drive (qty 4, wafer, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Keyboard (qty 1, wafer, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 1, wafer, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hard drive (qty 4, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 1, wafer, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 5, wafer, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 2, wafer, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
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). This device also uses M2.5, so measure each screw rather than assuming they match.
- 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: for wafer (thin) head screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
- The records span 2–6.5 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 / 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.
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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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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More in Laptops & PCs
The same screw also fits
Devices whose records share a thread with Lenovo ThinkPad T430u, closest length match first.
- HP ProBook 6570b also M2 × 3 mm
- Lenovo E50-80 also M2 × 2 mm
- HP 240 G5 also M2 × 2 mm
- Lenovo ideapad 110-17ISK also M2 × 3 mm
- Lenovo IdeaPad S210 also M2 × 2.5 mm
- Lenovo ThinkPad T43/p also M2 × 3 mm
- Acer Aspire 5930Z also M2 × 3 mm
- Dell Latitude 7390 also M2 × 2 mm
Questions about Lenovo ThinkPad T430u screws
- What size screw does Lenovo ThinkPad T430u use?
- M2 × 2 mm for system board (qty 6, flat); M2 × 2.5 mm for DC-in (qty 1, wafer, silver); M2 × 2.5 mm for display (qty 6, wafer, silver); M2 × 3 mm for card reader (qty 2, flat, silver); M2 × 3 mm for hinge (qty 6, wafer, silver); M2 × 3 mm for palm rest (qty 6, flat,wafer, silver,black); M2 × 3 mm for power button (qty 2, wafer,flat, black,silver); M2 × 3 mm for speaker (qty 2, wafer, black); M2 × 3 mm for SSD (qty 1, wafer, black); M2 × 3 mm for wireless card (qty 1, wafer, black); M2 × 5 mm for battery (qty 5, wafer, black); M2 × 5 mm for hard drive (qty 4, wafer, black); M2 × 5 mm for keyboard (qty 1, wafer, black); M2 × 5 mm for palm rest (qty 1, wafer, black); M2 × 6 mm for hard drive (q.
- How long are the screws in Lenovo ThinkPad T430u?
- The records range from 2 to 6.5 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 T430u?
- 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 T430u?
- TechSpareWarehouse (our own store) lists M2 x 2mm, M2 x 2.5mm and M2 x 3mm, which match lengths in the records above.