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HP d4000 screw size

M2 / M2.5 · 1.6 to 6 mm long

The screws used on HP d4000 are M2 and M2.5 in lengths from 1.6 to 6 mm.

There are 19 separate fitment records for it, including system board (qty 3, black, Phillips) (M2), heat sink (qty 4, black, Phillips) (M2) and SSD (qty 1, Phillips) (M2), plus 16 more in the table below.

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

19 of the 19 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 d4000 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
M21.6 mm0.4 mmnot statedPhillipsSystem board (qty 3, black, Phillips)black finishConfirmed
M22 mm0.4 mmnot statedPhillipsHeat sink (qty 4, black, Phillips)black finishConfirmed
M22 mm0.4 mmnot statedPhillipsSSD (qty 1, Phillips)Confirmed
M22 mm0.4 mmnot statedPhillipsSystem board (qty 3, black, Phillips)black finishConfirmed
M22 mm0.4 mmnot statedPhillipsTouchpad (qty 3, Phillips)Confirmed
M22 mm0.4 mmnot statedPhillipsWireless card (qty 1, Phillips)Confirmed
M22.5 mm0.4 mmnot statedPhillipsHinge (qty 1, Phillips)Confirmed
M22.5 mm0.4 mmnot statedPhillipsPower button (qty 1, Phillips)Confirmed
M22.5 mm0.4 mmnot statedPhillipsTouchpad (qty 2, Phillips)Confirmed
M23 mm0.4 mmnot statedPhillipsI/O board (qty 2, Phillips)Confirmed
M23 mm0.4 mmnot statedPhillipsBattery (qty 5, Phillips)Confirmed
M23 mm0.4 mmnot statedPhillipsCard reader (qty 2, Phillips)Confirmed
M23 mm0.4 mmnot statedPhillipsFan (qty 3, Phillips)Confirmed
M23 mm0.4 mmnot statedPhillipsSpeaker (qty 2, Phillips)Confirmed
M23 mm0.4 mmnot statedPhillipsSystem board (qty 3, black, Phillips)black finishConfirmed
M26 mm0.4 mmnot statedPhillipsBase cover (qty 6, Phillips)Confirmed
M2.53 mm0.45 mmnot statedPhillipsHinge (qty 3, Phillips)Confirmed
M2.54 mm0.45 mmnot statedPhillipsHinge (qty 6, Phillips)Confirmed
M2.56 mm0.45 mmnot statedPhillipsBase cover (qty 2, Phillips)Confirmed

Fitment records and sources

M21.6 mmconfirmed

System board (qty 3, black, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M22 mmconfirmed

Heat sink (qty 4, black, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M22 mmconfirmed

SSD (qty 1, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M22 mmconfirmed

System board (qty 3, black, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M22 mmconfirmed

Touchpad (qty 3, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M22 mmconfirmed

Wireless card (qty 1, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M22.5 mmconfirmed

Hinge (qty 1, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M22.5 mmconfirmed

Power button (qty 1, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M22.5 mmconfirmed

Touchpad (qty 2, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M23 mmconfirmed

I/O board (qty 2, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M23 mmconfirmed

Battery (qty 5, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M23 mmconfirmed

Card reader (qty 2, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M23 mmconfirmed

Fan (qty 3, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M23 mmconfirmed

Speaker (qty 2, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M23 mmconfirmed

System board (qty 3, black, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M26 mmconfirmed

Base cover (qty 6, Phillips)

pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6

M2.53 mmconfirmed

Hinge (qty 3, Phillips)

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

M2.54 mmconfirmed

Hinge (qty 6, Phillips)

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

M2.56 mmconfirmed

Base cover (qty 2, Phillips)

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

How to check the screw before you buy

  1. 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).
  2. Diameter: across the threads an M2 screw measures about 2 mm with calipers (usually a hair under). This device also uses M2.5, so measure each screw rather than assuming they match.
  3. 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.
  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 1.6–6 mm, which means different positions take different lengths — match each hole to its own screw.
  6. 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.
  7. 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

  • The standard M.2 SSD screw is M2 x 3mm, but some laptops and handhelds use non-standard lengths or head shapes.
  • 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).
  • 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.

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 d4000, closest length match first.

Questions about HP d4000 screws

What size screw does HP d4000 use?
M2 × 1.6 mm for system board (qty 3, black, Phillips); M2 × 2 mm for heat sink (qty 4, black, Phillips); M2 × 2 mm for SSD (qty 1, Phillips); M2 × 2 mm for system board (qty 3, black, Phillips); M2 × 2 mm for touchpad (qty 3, Phillips); M2 × 2 mm for wireless card (qty 1, Phillips); M2 × 2.5 mm for hinge (qty 1, Phillips); M2 × 2.5 mm for power button (qty 1, Phillips); M2 × 2.5 mm for touchpad (qty 2, Phillips); M2 × 3 mm for I/O board (qty 2, Phillips); M2 × 3 mm for battery (qty 5, Phillips); M2 × 3 mm for card reader (qty 2, Phillips); M2 × 3 mm for fan (qty 3, Phillips); M2 × 3 mm for speaker (qty 2, Phillips); M2 × 3 mm for system board (qty 3, black, Phillips); M2 × 6 mm for base cove.
How long are the screws in HP d4000?
The records range from 1.6 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 d4000?
The source lists a Phillips 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 d4000?
TechSpareWarehouse (our own store) lists M2 x 2mm, M2 x 2.5mm and M2 x 3mm, which match lengths in the records above.