Lenovo ThinkPad J13 i screw size
M1.6 / M2 / M2.5 · 1.7 to 4.5 mm long
Lenovo ThinkPad J13 i takes M1.6, M2 and M2.5 metric screws in lengths from 1.7 to 4.5 mm.
There are 9 separate fitment records for it, including touchpad (qty 6) (M1.6), base cover (qty 2) (M1.6) and I/O board (qty 1) (M2), plus 6 more in the table below.
9 of the 9 records are marked confirmed, drawn from 1 source (download.lenovo.com).
M1.6 means a 1.6 mm nominal diameter with a 0.35 mm thread pitch. Imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent.
Lenovo ThinkPad J13 i 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 |
|---|---|---|---|---|---|---|
| M1.6 | 1.7 mm | 0.35 mm | not stated | not stated | Touchpad (qty 6) | Confirmed |
| M1.6 | 3 mm | 0.35 mm | not stated | not stated | Base cover (qty 2) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | I/O board (qty 1) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | Base cover (qty 6) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | Fan (qty 1) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | SSD (qty 1) | Confirmed |
| M2 | 2 mm | 0.4 mm | not stated | not stated | Wireless card (qty 1) | Confirmed |
| M2.5 | 4.5 mm | 0.45 mm | not stated | not stated | Base cover (qty 4) | Confirmed |
| M2.5 | 4.5 mm | 0.45 mm | not stated | not stated | Hinge (qty 6) | Confirmed |
Fitment records and sources
Touchpad (qty 6)
pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5
Base cover (qty 2)
pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5
I/O board (qty 1)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Base cover (qty 6)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Fan (qty 1)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
SSD (qty 1)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Wireless card (qty 1)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Base cover (qty 4)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hinge (qty 6)
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 M1.6 screw measures about 1.6 mm with calipers (usually a hair under). This device also uses M2 / M2.5, so measure each screw rather than assuming they match.
- Pitch: 0.35 mm from one thread crest to the next (28.57 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 1.7–4.5 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M1.6 heads take PH00 for Phillips and T4–T5 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 M1.6 is about 12-20 N·cm into metal threads and 6-10 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M1.6 / M2 / M2.5
- Headphone hinge screw sizes are usually quoted from screwdriver bit size, not an actual thread spec - measure before buying.
- 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).
- 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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HP EliteBook 840 G8 Replacement Screws Sold Individually – M1.6 x 3mm, M2 x 2.5mm, M2 x 4mm, M2.5 x 4mm Phillips Wafer Head, Black
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M1.6 Phillips Flat Head Carbon Steel Machine Screws (Multiple Lengths & Finishes)
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The same screw also fits
Devices whose records share a thread with Lenovo ThinkPad J13 i, closest length match first.
- Lenovo ThinkPad P15s Gen 2 also M2 × 2 mm
- Toshiba Satellite M40X also M2 × 2 mm
- Lenovo IdeaPad S540-15IML also M2 × 2 mm
- Dell XPS 13 9300 also M2.5 × 4.5 mm
- Lenovo Yoga C940-14IIL also M2 × 2 mm
- Lenovo B41-80 also M2 × 2 mm
- HP mt45 Mobile Thin Client also M2 × 2 mm
- Lenovo Yoga C940-15IRH also M2 × 2 mm
Questions about Lenovo ThinkPad J13 i screws
- What size screw does Lenovo ThinkPad J13 i use?
- M1.6 × 1.7 mm for touchpad (qty 6); M1.6 × 3 mm for base cover (qty 2); M2 × 2 mm for I/O board (qty 1); M2 × 2 mm for base cover (qty 6); M2 × 2 mm for fan (qty 1); M2 × 2 mm for SSD (qty 1); M2 × 2 mm for wireless card (qty 1); M2.5 × 4.5 mm for base cover (qty 4); M2.5 × 4.5 mm for hinge (qty 6).
- How long are the screws in Lenovo ThinkPad J13 i?
- The records range from 1.7 to 4.5 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M1.6 screw?
- 0.35 mm (coarse), which is the standard pitch for M1.6 machine screws; a 0.2 mm fine pitch exists but is uncommon. The tap drill is 1.25 mm and the normal clearance hole is 1.8 mm.
- What screwdriver do I need for Lenovo ThinkPad J13 i?
- The sources do not name the drive. For M1.6, Phillips heads normally take PH00 and Torx heads T4–T5; socket heads take a 1.5 mm hex key.
- Can I use an imperial screw instead of M1.6?
- No. Imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent. Use a true M1.6 screw so it does not cross-thread or strip the hole.
- Where can I buy replacement screws for Lenovo ThinkPad J13 i?
- TechSpareWarehouse (our own store) lists M1.6 x 3mm and M2 x 2mm, which match lengths in the records above.