Lenovo Iseries 1700 screw size
M2 / M2.5 / M3 · 4 to 18 mm long
The screws used on Lenovo Iseries 1700 are M2, M2.5 and M3 in lengths from 4 to 18 mm.
There are 26 separate fitment records for it, including display (qty 1, pan) (M2), heat sink (qty 1, pan) (M2) and unspecified (qty 2, flat) (M2), plus 23 more in the table below.
Head and drive, as the sources state them: pan head.
26 of the 26 records are marked confirmed, drawn from 1 source (tim.id.au).
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 Iseries 1700 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 | 10 mm | 0.4 mm | Pan head | not stated | Display (qty 1, pan) | Confirmed |
| M2 | 10 mm | 0.4 mm | Pan head | not stated | Heat sink (qty 1, pan) | Confirmed |
| M2 | 14 mm | 0.4 mm | not stated | not stated | Unspecified (qty 2, flat) | Confirmed |
| M2 | 18 mm | 0.4 mm | Pan head | not stated | Heat sink (qty 3, pan) | Confirmed |
| M2 | 18 mm | 0.4 mm | Pan head | not stated | Palm rest (qty 3, pan) | Confirmed |
| M2 | 18 mm | 0.4 mm | Pan head | not stated | Unspecified (qty 3, pan) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | LED board (qty 1, flat) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Fan (qty 1, flat) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Heat sink (qty 4, flat) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Keyboard (qty 2, flat) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Palm rest (qty 3, flat) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Speaker (qty 5, flat) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | System board (qty 6, flat) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | not stated | Unspecified (qty 2, flat) | Confirmed |
| M2 | 5 mm | 0.4 mm | Pan head | not stated | Keyboard (qty 28, pan) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | Optical drive (qty 4, flat) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | not stated | System board (qty 4, flat) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Unspecified (qty 1, flat) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | Pan head | not stated | Display (qty 4, flat,pan) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | not stated | Heat sink (qty 2, flat) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | not stated | Palm rest (qty 1, flat) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | not stated | Speaker (qty 4, flat) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | Pan head | not stated | System board (qty 3, pan,flat) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | Pan head | not stated | Unspecified (qty 3, pan,flat) | Confirmed |
| M3 | 5 mm | 0.5 mm | Pan head | not stated | Hard drive (qty 2, pan) | Confirmed |
| M3 | 5 mm | 0.5 mm | not stated | not stated | Unspecified (qty 4, flat) | Confirmed |
Fitment records and sources
Display (qty 1, pan)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Heat sink (qty 1, pan)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 2, flat)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Heat sink (qty 3, pan)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 3, pan)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 3, pan)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
LED board (qty 1, flat)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Fan (qty 1, flat)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Heat sink (qty 4, flat)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Keyboard (qty 2, flat)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 3, flat)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Speaker (qty 5, flat)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
System board (qty 6, flat)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 2, flat)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Keyboard (qty 28, pan)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Optical drive (qty 4, flat)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
System board (qty 4, flat)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Unspecified (qty 1, flat)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 4, flat,pan)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Heat sink (qty 2, flat)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 1, flat)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Speaker (qty 4, flat)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
System board (qty 3, pan,flat)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Unspecified (qty 3, pan,flat)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 2, pan)
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
Unspecified (qty 4, flat)
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
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 / M3, 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 pan head screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
- The records span 4–18 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 / M3
- The standard M.2 SSD screw is M2 x 3mm, but some laptops and handhelds use non-standard lengths or head shapes.
- Dell/HP/Lenovo manuals often list screws only by torque or head shape, so community teardowns are needed for diameter.
- PC cases mix M3 (fans, optical and 2.5in drives) with imperial 6-32 (3.5in drives, motherboard standoffs) - don't force one into the other.
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 Iseries 1700, closest length match first.
- HP 250 G10 also M2 × 4 mm
- Lenovo Flex 4-1480 also M2.5 × 4 mm
- HP G60 also M2 × 10 mm
- Lenovo ThinkPad T15 Gen 2 also M2 × 4 mm
- ASUS W3000A also M2 × 4 mm
- Lenovo 300e also M2 × 4 mm
- Dell Inspiron 2200 also M2.5 × 5 mm
- Acer TravelMate 8471 also M2 × 4 mm
Questions about Lenovo Iseries 1700 screws
- What size screw does Lenovo Iseries 1700 use?
- M2 × 10 mm for display (qty 1, pan); M2 × 10 mm for heat sink (qty 1, pan); M2 × 14 mm for unspecified (qty 2, flat); M2 × 18 mm for heat sink (qty 3, pan); M2 × 18 mm for palm rest (qty 3, pan); M2 × 18 mm for unspecified (qty 3, pan); M2 × 4 mm for LED board (qty 1, flat); M2 × 4 mm for fan (qty 1, flat); M2 × 4 mm for heat sink (qty 4, flat); M2 × 4 mm for keyboard (qty 2, flat); M2 × 4 mm for palm rest (qty 3, flat); M2 × 4 mm for speaker (qty 5, flat); M2 × 4 mm for system board (qty 6, flat); M2 × 4 mm for unspecified (qty 2, flat); M2 × 5 mm for keyboard (qty 28, pan); M2.5 × 4 mm for optical drive (qty 4, flat); M2.5 × 4 mm for system board (qty 4, flat); M2.5 × 5 mm for unspecified .
- How long are the screws in Lenovo Iseries 1700?
- The records range from 4 to 18 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 Iseries 1700?
- 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 Iseries 1700?
- TechSpareWarehouse (our own store) lists M2 x 4mm, M2 x 5mm and M2.5 x 4mm, which match lengths in the records above.




