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HP Compaq nx6115 screw size

M2.5 / M3 · 4 to 9 mm long

HP Compaq nx6115 takes M2.5 and M3 metric screws in lengths from 4 to 9 mm.

There are 19 separate fitment records for it, including LED board (qty 1, Torx T8) (M2.5), keyboard (qty 4, black, Torx T8) (M2.5) and optical drive (qty 3, Torx T8) (M2.5), plus 16 more in the table below.

Head and drive, as the sources state them: Torx T8 and Phillips drives.

19 of the 19 records are marked confirmed, drawn from 1 source (h10032.www1.hp.com).

An M2.5 screw is 2.5 mm in diameter with a 0.45 mm pitch, tapped with a 2.05 mm drill; imperial look-alike: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in.

HP Compaq nx6115 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.

ThreadLengthPitchHeadDriveWhere it goesStatus
M2.54 mm0.45 mmnot statedTorx T8LED board (qty 1, Torx T8)Confirmed
M2.54 mm0.45 mmnot statedTorx T8Keyboard (qty 4, black, Torx T8)black finishConfirmed
M2.54 mm0.45 mmnot statedTorx T8Optical drive (qty 3, Torx T8)Confirmed
M2.54 mm0.45 mmnot statedTorx T8Power button (qty 1, Torx T8)Confirmed
M2.54 mm0.45 mmnot statedTorx T8Speaker (qty 1, Torx T8)Confirmed
M2.54 mm0.45 mmnot statedTorx T8Touchpad (qty 2, black, Torx T8)black finishConfirmed
M2.54 mm0.45 mmnot statedTorx T8Unspecified (qty 3, black, Torx T8)black finishConfirmed
M2.56 mm0.45 mmnot statedPhillipsHard drive (qty 2, black, Phillips)black finishConfirmed
M2.56 mm0.45 mmnot statedPhillipsMemory (qty 2, black, Phillips)black finishConfirmed
M2.57 mm0.45 mmnot statedTorx T8Display (qty 2, black, Torx T8)black finishConfirmed
M2.57 mm0.45 mmnot statedTorx T8Fan (qty 3, black, Torx T8)black finishConfirmed
M2.57 mm0.45 mmnot statedTorx T8Heat sink (qty 4, black, Torx T8)black finishConfirmed
M2.57 mm0.45 mmnot statedTorx T8Palm rest (qty 1, black, Torx T8)black finishConfirmed
M2.57 mm0.45 mmnot statedTorx T8System board (qty 3, black, Torx T8)black finishConfirmed
M2.59 mm0.45 mmnot statedTorx T8Display (qty 4, black, Torx T8)black finishConfirmed
M2.59 mm0.45 mmnot statedTorx T8Optical drive (qty 1, black, Torx T8)black finishConfirmed
M2.59 mm0.45 mmnot statedTorx T8Palm rest (qty 14, black, Torx T8)black finishConfirmed
M2.59 mm0.45 mmnot statedTorx T8Unspecified (qty 1, black, Torx T8)black finishConfirmed
M35 mm0.5 mmnot statedPhillipsHard drive (qty 4, black, Phillips)black finishConfirmed

Fitment records and sources

M2.54 mmconfirmed

LED board (qty 1, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.54 mmconfirmed

Keyboard (qty 4, black, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.54 mmconfirmed

Optical drive (qty 3, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.54 mmconfirmed

Power button (qty 1, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.54 mmconfirmed

Speaker (qty 1, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.54 mmconfirmed

Touchpad (qty 2, black, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.54 mmconfirmed

Unspecified (qty 3, black, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.56 mmconfirmed

Hard drive (qty 2, black, Phillips)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.56 mmconfirmed

Memory (qty 2, black, Phillips)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.57 mmconfirmed

Display (qty 2, black, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.57 mmconfirmed

Fan (qty 3, black, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.57 mmconfirmed

Heat sink (qty 4, black, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.57 mmconfirmed

Palm rest (qty 1, black, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.57 mmconfirmed

System board (qty 3, black, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.59 mmconfirmed

Display (qty 4, black, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.59 mmconfirmed

Optical drive (qty 1, black, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.59 mmconfirmed

Palm rest (qty 14, black, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M2.59 mmconfirmed

Unspecified (qty 1, black, Torx T8)

pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8

M35 mmconfirmed

Hard drive (qty 4, black, Phillips)

pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10

How to check the screw before you buy

  1. 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.
  2. Diameter: across the threads an M2.5 screw measures about 2.5 mm with calipers (usually a hair under). This device also uses M3, so measure each screw rather than assuming they match.
  3. Pitch: 0.45 mm from one thread crest to the next (22.22 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
  4. Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
  5. The records span 4–9 mm, which means different positions take different lengths — match each hole to its own screw.
  6. Driver: the source names a Torx T8 drive. For comparison, standard M2.5 heads take PH1 (Phillips) or T8 (Torx), or a 2 mm hex key.
  7. Tightening: no device-specific torque is published in these records. The site's general figure for M2.5 is about 45-70 N·cm into metal threads and 20-35 N·cm into plastic bosses; snug it up and stop.

Common mix-ups with M2.5 / M3

  • M2.5 pitch is 0.45mm vs M3's 0.5mm and M2's 0.4mm — forcing the wrong one strips plastic bosses instantly.
  • M2.5 and M3 look the same to the naked eye — you need calipers on the shank to tell them apart.
  • 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.
  • 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.

Pitch gauge · Screw size finder · Torque guide

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 nx6115, closest length match first.

Questions about HP Compaq nx6115 screws

What size screw does HP Compaq nx6115 use?
M2.5 × 4 mm for LED board (qty 1, Torx T8); M2.5 × 4 mm for keyboard (qty 4, black, Torx T8); M2.5 × 4 mm for optical drive (qty 3, Torx T8); M2.5 × 4 mm for power button (qty 1, Torx T8); M2.5 × 4 mm for speaker (qty 1, Torx T8); M2.5 × 4 mm for touchpad (qty 2, black, Torx T8); M2.5 × 4 mm for unspecified (qty 3, black, Torx T8); M2.5 × 6 mm for hard drive (qty 2, black, Phillips); M2.5 × 6 mm for memory (qty 2, black, Phillips); M2.5 × 7 mm for display (qty 2, black, Torx T8); M2.5 × 7 mm for fan (qty 3, black, Torx T8); M2.5 × 7 mm for heat sink (qty 4, black, Torx T8); M2.5 × 7 mm for palm rest (qty 1, black, Torx T8); M2.5 × 7 mm for system board (qty 3, black, Torx T8); M2.5 × 9 mm fo.
How long are the screws in HP Compaq nx6115?
The records range from 4 to 9 mm depending on the position, so match each screw to its own hole.
What is the thread pitch of an M2.5 screw?
0.45 mm (coarse), which is the standard pitch for M2.5 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.05 mm and the normal clearance hole is 2.9 mm.
What screwdriver do I need for HP Compaq nx6115?
The source lists a Torx T8 and Phillips drive. Standard M2.5 heads otherwise take PH1 (Phillips) or T8 (Torx), or a 2 mm hex key.
Can I use an imperial screw instead of M2.5?
No. Imperial look-alike: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in. Use a true M2.5 screw so it does not cross-thread or strip the hole.
Where can I buy replacement screws for HP Compaq nx6115?
TechSpareWarehouse (our own store) lists M2.5 x 4mm, M2.5 x 6mm and M3 x 5mm, which match lengths in the records above.