How long are the screws in Lenovo IdeaPad?

The records range from 4 to 6 mm depending on the position, so match each screw to its own hole.

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 IdeaPad?

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.

Where can I buy replacement screws for Lenovo IdeaPad?

TechSpareWarehouse (our own store) lists M2.5 x 4mm, M2.5 x 5mm and M2.5 x 6mm, which match lengths in the records above.

Lenovo IdeaPad screw size

M2.5 · 4 to 6 mm long

Our records put Lenovo IdeaPad on M2.5 screws in lengths from 4 to 6 mm.

It is listed for base cover screws, often mixed with M2 on speaker brackets.

This entry is marked reported and comes from techsparewarehouse.com.

For reference, M2.5 is 2.5 mm across the threads at 0.45 mm pitch. The imperial size people confuse it with: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in.

Lenovo IdeaPad 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	4–6 mm	0.45 mm	not stated	not stated	base cover screws, often mixed with M2 on speaker brackets	Reported

Fitment records and sources

M2.54-6mmreported

base cover screws, often mixed with M2 on speaker brackets

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

Source

How to check the screw before you buy

Rack and enclosure hardware mixes metric and imperial (#8-32, #10-32, #6-32), so confirm the thread before forcing a screw.
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 records span 4–6 mm, which means different positions take different lengths — match each hole to its own screw.
Driver: the source does not name the drive. Standard M2.5 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.
Projector optics and fan screws often step down to M2.5 while the outer covers use M3 - do not reuse cover screws inside the light engine.

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 IdeaPad, closest length match first.

Wurth Elektronik WA-SPAIE plastic spacer stud also M2.5 × 5–6 mm
IPETRONIK M-SENS2 sensor module mounting bracket also M2.5 × 6 mm
Clear-Com panel PSU module also M2.5 × 5 mm
PW-Sat2 CubeSat secondary structure and panels also M2.5 × 4–6 mm
HP Pavilion also M2.5 × 4–6 mm
HP EliteBook 840 G2 / 740 G2 / ZBook 14 G2 also M2.5 × 4–5 mm
Keystone Electronics metric nylon standoff also M2.5 × 4–5 mm
HP EliteBook 725 G3 also M2.5 × 4–5 mm

Questions about Lenovo IdeaPad screws

What size screw does Lenovo IdeaPad use?: M2.5 × 4–6 mm for base cover screws, often mixed with M2 on speaker brackets.
How long are the screws in Lenovo IdeaPad?: The records range from 4 to 6 mm depending on the position, so match each screw to its own hole.
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 IdeaPad?: 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.
Where can I buy replacement screws for Lenovo IdeaPad?: TechSpareWarehouse (our own store) lists M2.5 x 4mm, M2.5 x 5mm and M2.5 x 6mm, which match lengths in the records above.

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