HP Compaq 6730b screw size
M2 / M2.5 / M3 · 3 to 10 mm long
If you are replacing a screw on HP Compaq 6730b, the thread is M2, M2.5 and M3 in lengths from 3 to 10 mm.
There are 31 separate fitment records for it, including optical drive (qty 2, silver, Phillips) (M2), heat sink (qty 2, captive, black, Phillips) (M2) and hinge (qty 4, Phillips) (M2), plus 28 more in the table below.
Head and drive, as the sources state them: Phillips and Torx T8 drives.
31 of the 31 records are marked confirmed, drawn from 1 source (h10032.www1.hp.com).
An M2 screw is 2 mm in diameter with a 0.4 mm pitch, tapped with a 1.6 mm drill; imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable.
HP Compaq 6730b 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 | not stated | Phillips | Optical drive (qty 2, silver, Phillips) | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | Phillips | Heat sink (qty 2, captive, black, Phillips)black finish, captive | Confirmed |
| M2 | 4 mm | 0.4 mm | not stated | Phillips | Hinge (qty 4, Phillips) | Confirmed |
| M2 | 5 mm | 0.4 mm | not stated | Phillips | Hard drive (qty 2, captive, Phillips)captive | Confirmed |
| M2 | 5 mm | 0.4 mm | not stated | Phillips | Memory (qty 1, captive, Phillips)captive | Confirmed |
| M2 | 5 mm | 0.4 mm | not stated | Phillips | Power button (qty 3, silver, Phillips) | Confirmed |
| M2 | 5 mm | 0.4 mm | not stated | Phillips | Wireless card (qty 1, captive, black, Phillips)black finish, captive | Confirmed |
| M2.5 | 10 mm | 0.45 mm | not stated | Phillips | Hard drive (qty 1, captive, black, Phillips)black finish, captive | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | Phillips | Card reader (qty 2, broadhead, Phillips) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | Phillips | Display back cover (qty 3, broadhead, Phillips) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | Phillips | Palm rest (qty 3, broadhead, black,silver, Phillips)black finish | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | Phillips | System board (qty 2, broadhead, Phillips) | Confirmed |
| M2.5 | 3 mm | 0.45 mm | not stated | Phillips | Unspecified (qty 2, Phillips) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | Torx T8 | Display (qty 1, silver, Torx T8) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | Torx T8 | Hinge (qty 1, Torx T8) | Confirmed |
| M2.5 | 4 mm | 0.45 mm | not stated | Phillips | Wireless card (qty 2, silver, Phillips) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | I/O board (qty 3, black, Phillips)black finish | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | Display back cover (qty 2, Phillips) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | Optical drive (qty 2, Phillips) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | Speaker (qty 2, Phillips) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | System board (qty 1, Phillips) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | Phillips | Unspecified (qty 2, Phillips) | Confirmed |
| M2.5 | 6 mm | 0.45 mm | not stated | Torx T8 | Display bezel (qty 6, black, Torx T8)black finish | Confirmed |
| M2.5 | 7 mm | 0.45 mm | not stated | Torx T8 | Display (qty 6, Torx T8) | Confirmed |
| M2.5 | 7 mm | 0.45 mm | not stated | Phillips | Fan (qty 2, captive, silver, Phillips)captive | Confirmed |
| M2.5 | 9 mm | 0.45 mm | not stated | Torx T8 | Display (qty 4, black, Torx T8)black finish | Confirmed |
| M2.5 | 9 mm | 0.45 mm | not stated | Torx T8 | Display back cover (qty 4, Torx T8) | Confirmed |
| M2.5 | 9 mm | 0.45 mm | not stated | Phillips | Keyboard (qty 3, captive, Phillips)captive | Confirmed |
| M2.5 | 9 mm | 0.45 mm | not stated | Phillips | Optical drive (qty 1, captive, black, Phillips)black finish, captive | Confirmed |
| M2.5 | 9 mm | 0.45 mm | not stated | Torx T8 | Palm rest (qty 7, Torx T8) | Confirmed |
| M3 | 4 mm | 0.5 mm | not stated | Phillips | Hard drive (qty 4, silver, Phillips) | Confirmed |
Fitment records and sources
Optical drive (qty 2, silver, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Heat sink (qty 2, captive, black, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hinge (qty 4, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hard drive (qty 2, captive, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Memory (qty 1, captive, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Power button (qty 3, silver, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Wireless card (qty 1, captive, black, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Hard drive (qty 1, captive, black, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Card reader (qty 2, broadhead, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display back cover (qty 3, broadhead, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 3, broadhead, black,silver, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
System board (qty 2, broadhead, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Unspecified (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 1, silver, Torx T8)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hinge (qty 1, Torx T8)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Wireless card (qty 2, silver, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
I/O board (qty 3, black, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display back cover (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Optical drive (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Speaker (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
System board (qty 1, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Unspecified (qty 2, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display bezel (qty 6, black, Torx T8)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 6, Torx T8)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Fan (qty 2, captive, silver, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 4, black, Torx T8)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display back cover (qty 4, Torx T8)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Keyboard (qty 3, captive, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Optical drive (qty 1, captive, black, Phillips)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 7, Torx T8)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 4, silver, 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 3–10 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.
- 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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The same screw also fits
Devices whose records share a thread with HP Compaq 6730b, closest length match first.
- HP 256 G4 also M2 × 3 mm
- HP 250R 15.6 inch G10 also M2 × 3 mm
- Lenovo ThinkPad T470s also M2 × 3 mm
- Lenovo ThinkPad T14s 2-in-1 Gen 2 also M2 × 3 mm
- Dell Latitude E5500 also M2 × 3 mm
- LG LM50 also M2 × 5 mm
- Lenovo ThinkPad X240s also M2 × 5 mm
- HP 250 G1 also M2 × 3 mm
Questions about HP Compaq 6730b screws
- What size screw does HP Compaq 6730b use?
- M2 × 3 mm for optical drive (qty 2, silver, Phillips); M2 × 4 mm for heat sink (qty 2, captive, black, Phillips); M2 × 4 mm for hinge (qty 4, Phillips); M2 × 5 mm for hard drive (qty 2, captive, Phillips); M2 × 5 mm for memory (qty 1, captive, Phillips); M2 × 5 mm for power button (qty 3, silver, Phillips); M2 × 5 mm for wireless card (qty 1, captive, black, Phillips); M2.5 × 10 mm for hard drive (qty 1, captive, black, Phillips); M2.5 × 3 mm for card reader (qty 2, broadhead, Phillips); M2.5 × 3 mm for display back cover (qty 3, broadhead, Phillips); M2.5 × 3 mm for palm rest (qty 3, broadhead, black,silver, Phillips); M2.5 × 3 mm for system board (qty 2, broadhead, Phillips); M2.5 × 3 mm f.
- How long are the screws in HP Compaq 6730b?
- The records range from 3 to 10 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 Compaq 6730b?
- 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 Compaq 6730b?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M2 x 4mm and M2 x 5mm, which match lengths in the records above.




