Lenovo ThinkPad P50 screw size
M2 / M2.5 · 2 to 12 mm long
The screws used on Lenovo ThinkPad P50 are M2 and M2.5 in lengths from 2 to 12 mm.
There are 17 separate fitment records for it, including chassis/frame (qty 2, flat, black) (M2), keyboard (qty 3, flat, black) (M2) and display (qty 4, flat, silver) (M2), plus 14 more in the table below.
17 of the 17 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 P50 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 | 12 mm | 0.4 mm | not stated | not stated | Chassis/frame (qty 2, flat, black)black finish | Confirmed |
| M2 | 12 mm | 0.4 mm | not stated | not stated | Keyboard (qty 3, flat, black)black finish | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | Display (qty 4, flat, silver) | Confirmed |
| M2 | 2.2 mm | 0.4 mm | not stated | not stated | Speaker (qty 2, flat, silver) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Card reader (qty 2, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Hinge (qty 4, flat, black,silver)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Memory (qty 1, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | SSD (qty 1, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | System board (qty 1, flat, black)black finish | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Wireless card (qty 1, flat, black)black finish | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Display (qty 2, flat, silver) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Hinge (qty 6, flat, silver) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Palm rest (qty 5, flat, silver) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Chassis/frame (qty 2, flat, black)black finish | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Display (qty 2, flat, black,silver)black finish | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Palm rest (qty 3, flat, black)black finish | Confirmed |
| M2.5 | 8 mm | 0.45 mm | not stated | not stated | Display (qty 2, flat, black)black finish | Confirmed |
Fitment records and sources
Chassis/frame (qty 2, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Keyboard (qty 3, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 4, flat, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Speaker (qty 2, flat, silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Card reader (qty 2, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hinge (qty 4, flat, black,silver)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Memory (qty 1, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
SSD (qty 1, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
System board (qty 1, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Wireless card (qty 1, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 2, flat, silver)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hinge (qty 6, flat, silver)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 5, flat, silver)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Chassis/frame (qty 2, flat, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 2, flat, black,silver)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 3, flat, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 2, 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
- Laptop covers and brackets often mix two or three lengths of the same thread, so lay the screws out in the order they came out (a magnetic mat or a sheet of paper with the hole pattern drawn on it works).
- 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: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- The records span 2–12 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.
- Xbox Series X internal chassis screws are M3, not M2 (confirmed on iFixit) — a widespread misconception.
- 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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More in Laptops & PCs
The same screw also fits
Devices whose records share a thread with Lenovo ThinkPad P50, closest length match first.
- Acer TravelMate 7730 also M2 × 3 mm
- Lenovo ideapad 320E-15IKB also M2 × 3 mm
- Dell Latitude 3120 2-in-1 also M2 × 2 mm
- Dell Inspiron 14 7466 also M2 × 2 mm
- Lenovo ThinkPad X1 Carbon Gen 12 also M2 × 2 mm
- Lenovo ideapad 330S-14AST D also M2 × 3 mm
- Dell Inspiron 11 3195 2-in-1 also M2 × 2 mm
- Dell XPS 13 Plus 9320 also M2 × 3 mm
Questions about Lenovo ThinkPad P50 screws
- What size screw does Lenovo ThinkPad P50 use?
- M2 × 12 mm for chassis/frame (qty 2, flat, black); M2 × 12 mm for keyboard (qty 3, flat, black); M2 × 2 mm for display (qty 4, flat, silver); M2 × 2.2 mm for speaker (qty 2, flat, silver); M2 × 3 mm for card reader (qty 2, flat, black); M2 × 3 mm for hinge (qty 4, flat, black,silver); M2 × 3 mm for memory (qty 1, flat, black); M2 × 3 mm for SSD (qty 1, flat, black); M2 × 3 mm for system board (qty 1, flat, black); M2 × 3 mm for wireless card (qty 1, flat, black); M2.5 × 4 mm for display (qty 2, flat, silver); M2.5 × 4 mm for hinge (qty 6, flat, silver); M2.5 × 4 mm for palm rest (qty 5, flat, silver); M2.5 × 5 mm for chassis/frame (qty 2, flat, black); M2.5 × 5 mm for display (qty 2, flat, b.
- How long are the screws in Lenovo ThinkPad P50?
- The records range from 2 to 12 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 P50?
- 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 P50?
- TechSpareWarehouse (our own store) lists M2 x 2mm, M2 x 3mm and M2.5 x 4mm, which match lengths in the records above.



