How long are the screws in Akuvox A08 video doorbell?

The record gives 5 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.

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 Akuvox A08 video doorbell?

The source lists a 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 Akuvox A08 video doorbell?

TechSpareWarehouse (our own store) lists M2.5 x 5mm, which matches the length in the records above.

Akuvox A08 video doorbell screw size

M2.5 · 5 mm long

Akuvox A08 video doorbell takes M2.5 metric screws, 5 mm long.

The record covers official quick guide lists 'A08 M2.5 x 5 crosshead screw' for the flush-mount plate / wiring cover.

Head and drive, as the source states them: Phillips drive.

This entry is marked confirmed and comes from didactum-security.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.

Akuvox A08 video doorbell 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
M2.5	5 mm	0.45 mm	not stated	Phillips	Official quick guide lists 'A08 M2.5 x 5 crosshead screw' for the flush-mount plate / wiring cover	Confirmed

Fitment records and sources

M2.55mmconfirmed

Official quick guide lists 'A08 M2.5 x 5 crosshead screw' for the flush-mount plate / wiring cover

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

Source

How to check the screw before you buy

Over-long screws in phones are a known cause of damaged boards (Apple's 'long screw damage'), so never swap positions.
Diameter: across the threads an M2.5 screw measures about 2.5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
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.
Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
The record states 5 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
Driver: the source names a Phillips drive. For comparison, standard M2.5 heads take PH1 (Phillips) or T8 (Torx), or a 2 mm hex key.
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

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

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 Akuvox A08 video doorbell, closest length match first.

Xbox Series X drive bay and PSU also M2.5 × 5 mm
Lenovo V110-17IKB also M2.5 × 5 mm
Dell Precision 3561 also M2.5 × 5 mm
HP ENVY x360 13.3 inch 2-in-1 also M2.5 × 5 mm
Dell Inspiron 2600 also M2.5 × 5 mm
Lenovo ideapad 320R-15IKB also M2.5 × 5 mm
Dell Vostro 15 3591 also M2.5 × 5 mm
Dell Vostro 15 3590 also M2.5 × 5 mm

Questions about Akuvox A08 video doorbell screws

What size screw does Akuvox A08 video doorbell use?: M2.5 × 5 mm for official quick guide lists 'A08 M2.5 x 5 crosshead screw' for the flush-mount plate / wiring cover.
How long are the screws in Akuvox A08 video doorbell?: The record gives 5 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
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 Akuvox A08 video doorbell?: The source lists a 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 Akuvox A08 video doorbell?: TechSpareWarehouse (our own store) lists M2.5 x 5mm, which matches the length in the records above.

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