Lenovo ThinkPad X13 Gen 3 screw size
M2.5 · 3.5 mm long
If you are replacing a screw on Lenovo ThinkPad X13 Gen 3, the thread is M2.5, 3.5 mm long.
It is listed for service screw kit, black (12x).
This entry is marked confirmed and comes from download.lenovo.com.
An M2.5 screw is 2.5 mm in diameter with a 0.45 mm pitch, tapped with a 2.05 mm drill; imperial look-alike: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in.
Lenovo ThinkPad X13 Gen 3 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 |
|---|---|---|---|---|---|---|
| M2.5 | 3.5 mm | 0.45 mm | not stated | not stated | service screw kit, black (12x)black finish | Confirmed |
Fitment records and sources
service screw kit, black (12x)
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 M2.5 screw measures about 2.5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.45 mm from one thread crest to the next (22.22 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 record states 3.5 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- Driver: the source does not name the drive. Standard M2.5 heads take PH1 for Phillips and T8 for Torx, and a 2 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 M2.5 is about 45-70 N·cm into metal threads and 20-35 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2.5
- 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.
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Browse all 2799 in Laptops & PCs →The same screw also fits
Devices whose records share a thread with Lenovo ThinkPad X13 Gen 3, closest length match first.
- Lenovo V4400u also M2.5 × 3.5 mm
- Lenovo ThinkPad T16 Gen 4 also M2.5 × 3.5 mm
- HP OmniBook 7 16 inch AI PC: 16- ay0xxx also M2.5 × 3.5 mm
- Lenovo ThinkPad X13 Gen 2 also M2.5 × 3.5 mm
- HP 16-f2000 (ids 2100677648 also M2.5 × 3.5 mm
- Lenovo ThinkPad T16 Gen 2 also M2.5 × 3.5 mm
- Lenovo G51-35 also M2.5 × 3.5 mm
- Dell Inspiron 13 7391 also M2.5 × 3.5 mm
Questions about Lenovo ThinkPad X13 Gen 3 screws
- What size screw does Lenovo ThinkPad X13 Gen 3 use?
- M2.5 × 3.5 mm for service screw kit, black (12x).
- How long are the screws in Lenovo ThinkPad X13 Gen 3?
- The record gives 3.5 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M2.5 screw?
- 0.45 mm (coarse), which is the standard pitch for M2.5 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.05 mm and the normal clearance hole is 2.9 mm.
- What screwdriver do I need for Lenovo ThinkPad X13 Gen 3?
- The sources do not name the drive. For M2.5, Phillips heads normally take PH1 and Torx heads T8; socket heads take a 2 mm hex key.
- Can I use an imperial screw instead of M2.5?
- No. Imperial look-alike: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in. Use a true M2.5 screw so it does not cross-thread or strip the hole.