What size screw does PowerVision PowerRay underwater drone use?

M2 × 5 mm for rear panel blue-marked screws, M2 x 5; M2.5 × 6–12 mm for rear panel — 16 red-marked M2.5 x 6 screws; airtight module uses 8 red M2.5 x 12.

How long are the screws in PowerVision PowerRay underwater drone?

The records range from 5 to 12 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 PowerVision PowerRay underwater drone?

The sources do not name the drive. For M2, Phillips heads normally take PH0 and Torx heads T6; socket heads take 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 PowerVision PowerRay underwater drone?

TechSpareWarehouse (our own store) lists M2 x 5mm, M2.5 x 6mm and M2.5 x 8mm, which match lengths in the records above.

PowerVision PowerRay underwater drone screw size

M2 / M2.5 · 5 to 12 mm long

Our records put PowerVision PowerRay underwater drone on M2 and M2.5 screws in lengths from 5 to 12 mm.

There are 2 separate fitment records for it, including rear panel blue-marked screws, M2 x 5 (M2) and rear panel — 16 red-marked M2.5 x 6 screws; airtight module uses 8 red M2.5 x 12 (M2.5).

2 of the 2 records are marked confirmed, drawn from 1 source (ifixit.com).

For reference, M2 is 2 mm across the threads at 0.4 mm pitch. The imperial size people confuse it with: #2-56 UNC (2.18 mm) is close but not interchangeable.

PowerVision PowerRay underwater drone 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 mm	0.4 mm	not stated	not stated	Rear panel blue-marked screws, M2 x 5	Confirmed
M2.5	6–12 mm	0.45 mm	not stated	not stated	Rear panel — 16 red-marked M2.5 x 6 screws; airtight module uses 8 red M2.5 x 12	Confirmed

Fitment records and sources

M25 mmconfirmed

Rear panel blue-marked screws, M2 x 5

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

Source

M2.56 mm and 12 mmconfirmed

Rear panel — 16 red-marked M2.5 x 6 screws; airtight module uses 8 red M2.5 x 12

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

Source

How to check the screw before you buy

Frame and motor screws must not reach the motor windings; check the length against the motor's mounting depth.
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.
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 5–12 mm, which means different positions take different lengths — match each hole to its own screw.
Driver: the source does not name the drive. Standard M2 heads take PH0 for Phillips and T6 for Torx, and a 1.5 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
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

Drone kits mix M2 (motors) and M2.5 (stack) in the same bag — easy to grab the wrong one.
M2 (2.00mm, 0.4mm pitch) is NOT the same as #2-56 UNC (2.18mm) — close enough to cross-thread and strip if forced.
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 PowerVision PowerRay underwater drone, closest length match first.

Hitec / Futaba servo horn retaining screw also M2.5 × 8 mm
Sewing machine needle plate also M2.5 × 6–10 mm
Axial SCX10 III RC crawler, countersunk and cap screws also M2.5 × 6–12 mm
DJI OEM mounting screw (quad/hex arm hardware) also M2.5 × 6–7 mm
Holybro X500 V2 with Pixhawk 6C (PX4 official build) also M2.5 × 6 mm
Antique wall clock pendulum brackets also M2.5 × 6–10 mm
Holybro X500 V2 with Pixhawk 6C also M2.5 × 6 mm
FPV freestyle frames (Djinn F25 SP) also M2 × 5 mm

Questions about PowerVision PowerRay underwater drone screws

What size screw does PowerVision PowerRay underwater drone use?: M2 × 5 mm for rear panel blue-marked screws, M2 x 5; M2.5 × 6–12 mm for rear panel — 16 red-marked M2.5 x 6 screws; airtight module uses 8 red M2.5 x 12.
How long are the screws in PowerVision PowerRay underwater drone?: The records range from 5 to 12 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 PowerVision PowerRay underwater drone?: The sources do not name the drive. For M2, Phillips heads normally take PH0 and Torx heads T6; socket heads take 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 PowerVision PowerRay underwater drone?: TechSpareWarehouse (our own store) lists M2 x 5mm, M2.5 x 6mm and M2.5 x 8mm, which match lengths in the records above.

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