Lenovo B570 screw size
M2 / M2.5 · 2.5 to 8 mm long
Our records put Lenovo B570 on M2 and M2.5 screws in lengths from 2.5 to 8 mm.
There are 15 separate fitment records for it, including display (qty 4, flat, black) (M2), palm rest (qty 3, flat, white) (M2) and hard drive (qty 1, flat, white) (M2), plus 12 more in the table below.
15 of the 15 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 B570 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 | 2.5 mm | 0.4 mm | not stated | not stated | Display (qty 4, flat, black)black finish | Confirmed |
| M2 | 2.5 mm | 0.4 mm | not stated | not stated | Palm rest (qty 3, flat, white) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Hard drive (qty 1, flat, white) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Optical drive (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 | 3.5 mm | 0.4 mm | not stated | not stated | Base cover (qty 4, flat, black)black finish | Confirmed |
| M2 | 3.5 mm | 0.4 mm | not stated | not stated | Palm rest (qty 1, flat, black)black finish | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | not stated | Palm rest (qty 1, flat, black)black finish | Confirmed |
| M2 | 6 mm | 0.4 mm | not stated | not stated | System board (qty 2, flat, black)black finish | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Display (qty 6, flat, white) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Display bezel (qty 2, flat, white) | Confirmed |
| M2.5 | 4.7 mm | 0.45 mm | not stated | not stated | Hard drive (qty 5, flat, black)black finish | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | not stated | Display (qty 4, flat, white) | Confirmed |
| M2.5 | 8 mm | 0.45 mm | not stated | not stated | Keyboard (qty 3, flat, black)black finish | Confirmed |
| M2.5 | 8 mm | 0.45 mm | not stated | not stated | Palm rest (qty 10, flat, black)black finish | Confirmed |
Fitment records and sources
Display (qty 4, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 3, flat, white)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hard drive (qty 1, flat, white)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Optical drive (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
Base cover (qty 4, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 1, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 1, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
System board (qty 2, flat, black)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 6, flat, white)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display bezel (qty 2, flat, white)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 5, flat, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 4, flat, white)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Keyboard (qty 3, flat, black)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 10, 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
- 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: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- The records span 2.5–8 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.
- M2.5 pitch is 0.45mm vs M3's 0.5mm and M2's 0.4mm — forcing the wrong one strips plastic bosses instantly.
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 B570, closest length match first.
- Dell XPS 17 9730 also M2.5 × 6 mm
- Dell Inspiron 14 5430 also M2 × 3 mm
- Lenovo n42-20-touch also M2 × 3 mm
- HP OmniBook 7 16 inch Next Gen AI PC: 16-bh0xxx also M2 × 3 mm
- HP ProBook 440 G6 also M2 × 2.5 mm
- Acer TravelMate 4500 also M2.5 × 6 mm
- HP EliteBook 8470p also M2 × 3 mm
- HP Compaq 8710p also M2 × 3 mm
Questions about Lenovo B570 screws
- What size screw does Lenovo B570 use?
- M2 × 2.5 mm for display (qty 4, flat, black); M2 × 2.5 mm for palm rest (qty 3, flat, white); M2 × 3 mm for hard drive (qty 1, flat, white); M2 × 3 mm for optical drive (qty 1, flat, black); M2 × 3 mm for wireless card (qty 1, flat, black); M2 × 3.5 mm for base cover (qty 4, flat, black); M2 × 3.5 mm for palm rest (qty 1, flat, black); M2 × 6 mm for palm rest (qty 1, flat, black); M2 × 6 mm for system board (qty 2, flat, black); M2.5 × 4 mm for display (qty 6, flat, white); M2.5 × 4 mm for display bezel (qty 2, flat, white); M2.5 × 4.7 mm for hard drive (qty 5, flat, black); M2.5 × 6 mm for display (qty 4, flat, white); M2.5 × 8 mm for keyboard (qty 3, flat, black); M2.5 × 8 mm for palm rest.
- How long are the screws in Lenovo B570?
- The records range from 2.5 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 B570?
- 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 B570?
- TechSpareWarehouse (our own store) lists M2 x 2.5mm, M2 x 3mm and M2 x 6mm, which match lengths in the records above.