HP ProBook 445 G2 screw size
M2 / M2.5 / M3 · 2.5 to 6 mm long
If you are replacing a screw on HP ProBook 445 G2, the thread is M2, M2.5 and M3 in lengths from 2.5 to 6 mm.
There are 20 separate fitment records for it, including palm rest (qty 3, Phillips) (M2), display (qty 4, Phillips) (M2) and hinge (qty 6, Phillips) (M2), plus 17 more in the table below.
Head and drive, as the sources state them: Phillips and Torx T8 drives.
20 of the 20 records are marked confirmed, drawn from 1 source (h10032.www1.hp.com).
For reference, M2 is 2 mm across the threads at 0.4 mm pitch. The imperial size people confuse it with: #2-56 UNC (2.18 mm) is close but not interchangeable.
HP ProBook 445 G2 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 | Phillips | Palm rest (qty 3, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Display (qty 4, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Hinge (qty 6, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Optical drive (qty 1, broadhead, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Power button (qty 1, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Speaker (qty 2, broadhead, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Touchpad (qty 1, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Unspecified (qty 1, Phillips) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | Phillips | Palm rest (qty 7, Phillips) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | Phillips | Wireless card (qty 2, Phillips) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | Phillips | I/O board (qty 1, Phillips) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | Phillips | Battery (qty 2, Phillips) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | Phillips | Card reader (qty 2, Phillips) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | Phillips | Hard drive (qty 4, Phillips) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | Phillips | Hinge (qty 5, Phillips) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | Phillips | System board (qty 3, broadhead, Phillips) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | Phillips | Keyboard (qty 2, Phillips) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | Phillips | Optical drive (qty 1, Phillips) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | Torx T8 | Palm rest (qty 8, Torx T8) | Confirmed |
| M3 | 3 mm | 0.5 mm | not stated | Phillips | Hard drive (qty 4, Phillips) | Confirmed |
Fitment records and sources
Palm rest (qty 3, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 4, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hinge (qty 6, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Optical drive (qty 1, broadhead, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Power button (qty 1, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Speaker (qty 2, broadhead, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Touchpad (qty 1, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 1, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Palm rest (qty 7, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Wireless card (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
I/O board (qty 1, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Battery (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Card reader (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 4, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hinge (qty 5, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
System board (qty 3, broadhead, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Keyboard (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Optical drive (qty 1, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 8, Torx T8)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 4, Phillips)
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: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- The records span 2.5–6 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source names a Phillips drive. For comparison, standard M2 heads take PH0 (Phillips) or T6 (Torx), or a 1.5 mm hex key.
- 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.
- M2.5 pitch is 0.45mm vs M3's 0.5mm and M2's 0.4mm — forcing the wrong one strips plastic bosses instantly.
- Suunto dive computer service manuals reference strap pins and battery compartment springs but do not explicitly cite a metric screw thread size in the sections reviewed; do not infer M2/M2.5 fitment for Suunto dive computer straps without direct confirmation.
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.
-
M2 x 2.5mm Screws for Dell XPS 14 9440 M.2 SSD Drive – 10-Pack Black
$4.99 -
M2 x 2.5mm Screws for ASUS ROG Strix G17 G713 SSD WiFi Touchpad 10-Pack Black
$4.99
-
M2 x 3mm Screws for Dell XPS 13 9340 Base Cover SSD Shield 10-Pack Black
$4.99 -
10x M2 x 3mm Phillips Screws for Lenovo ThinkPad X131e Chromebook WiFi SSD
$4.99
-
25x M2.5 x 3mm Phillips Screws for Acer Nitro 5 SSD M.2 WiFi Card
$5.99 -
ASUS ROG Strix G15 G513R Replacement Screws Sold Individually – M1.6 x 3mm, M2 x 2.5mm, M2 x 3mm, M2.5 x 6mm Phillips Wafer Head, Black
$0.10Choose size -
ASUS ROG Strix G17 G713 Replacement Screws Sold Individually – M1.6 x 3mm, M2 x 2.5mm, M2 x 3mm, M2.5 x 6mm Phillips Wafer Head, Black
$0.10Choose size
-
Dell Latitude 5430 Replacement Screws Sold Individually – M2 x 2.5mm, M2 x 3mm, M2 x 5mm, M2.5 x 5mm Phillips Wafer Head, Black
$0.10Choose size
More in Laptops & PCs
The same screw also fits
Devices whose records share a thread with HP ProBook 445 G2, closest length match first.
- HP ProBook 4540s also M2 × 2.5 mm
- Lenovo ThinkPad X120e also M2 × 3 mm
- HP OMEN 16.1 in. gaming laptop (16-ae0xxx) also M2 × 2.5 mm
- HP 255R 15.6 inch G10 also M2 × 2.5 mm
- Lenovo ThinkPad P16 Gen 2 also M2 × 2.5 mm
- HP 17-ck1000 also M2 × 2.5 mm
- HP ProBook 5320m also M2.5 × 4 mm
- HP ProBook x360 11 G7 EE also M2 × 3 mm
Questions about HP ProBook 445 G2 screws
- What size screw does HP ProBook 445 G2 use?
- M2 × 2.5 mm for palm rest (qty 3, Phillips); M2 × 3 mm for display (qty 4, Phillips); M2 × 3 mm for hinge (qty 6, Phillips); M2 × 3 mm for optical drive (qty 1, broadhead, Phillips); M2 × 3 mm for power button (qty 1, Phillips); M2 × 3 mm for speaker (qty 2, broadhead, Phillips); M2 × 3 mm for touchpad (qty 1, Phillips); M2 × 3 mm for unspecified (qty 1, Phillips); M2.5 × 3 mm for palm rest (qty 7, Phillips); M2.5 × 3 mm for wireless card (qty 2, Phillips); M2.5 × 4 mm for I/O board (qty 1, Phillips); M2.5 × 4 mm for battery (qty 2, Phillips); M2.5 × 4 mm for card reader (qty 2, Phillips); M2.5 × 4 mm for hard drive (qty 4, Phillips); M2.5 × 4 mm for hinge (qty 5, Phillips); M2.5 × 4 mm for .
- How long are the screws in HP ProBook 445 G2?
- The records range from 2.5 to 6 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 HP ProBook 445 G2?
- The source lists a Phillips and Torx T8 drive. Standard M2 heads otherwise take PH0 (Phillips) or T6 (Torx), or 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 HP ProBook 445 G2?
- TechSpareWarehouse (our own store) lists M2 x 2.5mm, M2 x 3mm and M2.5 x 3mm, which match lengths in the records above.