HP ProBook 6460b screw size
M2 / M2.5 / M3 · 3 to 11 mm long
HP ProBook 6460b takes M2, M2.5 and M3 metric screws in lengths from 3 to 11 mm.
There are 18 separate fitment records for it, including base cover (qty 2, pan, Phillips) (M2), card reader (qty 2, Phillips) (M2) and optical drive (qty 3, Phillips) (M2), plus 15 more in the table below.
Head and drive, as the sources state them: pan head and Phillips and Torx drives.
18 of the 18 records are marked confirmed, drawn from 1 source (h10032.www1.hp.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.
HP ProBook 6460b 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 | 3 mm | 0.4 mm | Pan head | Phillips | Base cover (qty 2, pan, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Card reader (qty 2, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Optical drive (qty 3, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | System board (qty 2, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Unspecified (qty 2, Phillips) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Wireless card (qty 2, Phillips) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | Phillips | Card reader (qty 1, broadhead, Phillips) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | Phillips | Display (qty 2, broadhead, Phillips) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | Phillips | Unspecified (qty 4, Phillips) | Confirmed |
| M2 | 5 mm | 0.4 mm | not stated | Phillips | Speaker (qty 2, Phillips) | Confirmed |
| M2.5 | 11 mm | 0.45 mm | not stated | Phillips | Base cover (qty 2, Phillips) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | Phillips | Hinge (qty 6, Phillips) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | Phillips | System board (qty 2, Phillips) | Confirmed |
| M2.5 | 4.5 mm | 0.45 mm | not stated | Phillips | Base cover (qty 2, Phillips) | Confirmed |
| M2.5 | 4.5 mm | 0.45 mm | not stated | Phillips | Display (qty 2, Phillips) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | Display (qty 6, Phillips) | Confirmed |
| M2.5 | 8 mm | 0.45 mm | not stated | Torx | Base cover (qty 8, Torx) | Confirmed |
| M3 | 5 mm | 0.5 mm | not stated | Phillips | Hard drive (qty 2, Phillips) | Confirmed |
Fitment records and sources
Base cover (qty 2, pan, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Card reader (qty 2, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Optical drive (qty 3, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
System board (qty 2, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 2, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Wireless card (qty 2, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Card reader (qty 1, broadhead, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 2, broadhead, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Unspecified (qty 4, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Speaker (qty 2, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Base cover (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hinge (qty 6, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
System board (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Base cover (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 6, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Base cover (qty 8, Torx)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 2, Phillips)
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
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 / 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 3–11 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.
- Thorlabs' 16mm cage system standard plates use dual 4-40 (UNC) and M3 taps on the same plate (e.g., SP01), so metric and imperial fasteners are both valid depending on the region/kit purchased.
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 HP ProBook 6460b, closest length match first.
- Dell G7 15 7590 also M2 × 3 mm
- Dell Precision 7680 also M2 × 3 mm
- Dell Inspiron 8200 also M2 × 3 mm
- Acer TravelMate 6593 also M2 × 3 mm
- Lenovo ThinkPad X60 also M2 × 3 mm
- Lenovo ideapad FLEX 4-1130 also M2 × 3 mm
- Lenovo 4th Gen also M2 × 3 mm
- HP Compaq Mini 210 also M2 × 4 mm
Questions about HP ProBook 6460b screws
- What size screw does HP ProBook 6460b use?
- M2 × 3 mm for base cover (qty 2, pan, Phillips); M2 × 3 mm for card reader (qty 2, Phillips); M2 × 3 mm for optical drive (qty 3, Phillips); M2 × 3 mm for system board (qty 2, Phillips); M2 × 3 mm for unspecified (qty 2, Phillips); M2 × 3 mm for wireless card (qty 2, Phillips); M2 × 4 mm for card reader (qty 1, broadhead, Phillips); M2 × 4 mm for display (qty 2, broadhead, Phillips); M2 × 4 mm for unspecified (qty 4, Phillips); M2 × 5 mm for speaker (qty 2, Phillips); M2.5 × 11 mm for base cover (qty 2, Phillips); M2.5 × 3 mm for hinge (qty 6, Phillips); M2.5 × 4 mm for system board (qty 2, Phillips); M2.5 × 4.5 mm for base cover (qty 2, Phillips); M2.5 × 4.5 mm for display (qty 2, Phillips).
- How long are the screws in HP ProBook 6460b?
- The records range from 3 to 11 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 6460b?
- The source lists a Phillips and Torx 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 6460b?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M2 x 4mm and M2 x 5mm, which match lengths in the records above.




