Dyson internal circuit board screw size
M2.5 · 4 to 8 mm long
Our records put Dyson internal circuit board on M2.5 screws in lengths from 4 to 8 mm.
The record covers the control board inside the handle.
This entry is marked reported and comes from ifixit.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.
Dyson internal circuit board 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 | 4–8 mm | 0.45 mm | not stated | not stated | the control board inside the handle | Reported |
Fitment records and sources
the control board inside the handle
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
How to check the screw before you buy
- Unplug the appliance and discharge any capacitors before removing covers.
- 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 records span 4–8 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M2.5 heads take PH1 for Phillips and T8 for Torx, and a 2 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 M2.5 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
- Projector optics and fan screws often step down to M2.5 while the outer covers use M3 - do not reuse cover screws inside the light engine.
- M2.5 and M3 look the same to the naked eye — you need calipers on the shank to tell them apart.
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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Devices whose records share a thread with Dyson internal circuit board, closest length match first.
- HP Compaq 6720s also M2.5 × 4 mm
- Lenovo ThinkPad E570c also M2.5 × 4 mm
- Dell Inspiron 1420 also M2.5 × 5 mm
- Lenovo ThinkPad P16v Gen 3 also M2.5 × 5 mm
- Lenovo X1YOGA also M2.5 × 4.5 mm
- Lenovo ThinkPad Yoga 11e Chromebook 4th Gen also M2.5 × 6.5 mm
- Lenovo ThinkPad T14s Gen 7 also M2.5 × 4.5 mm
- HP ENVY x360 m6-w0xx also M2.5 × 4 mm
Questions about Dyson internal circuit board screws
- What size screw does Dyson internal circuit board use?
- M2.5 × 4–8 mm for the control board inside the handle.
- How long are the screws in Dyson internal circuit board?
- The records range from 4 to 8 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 Dyson internal circuit board?
- The sources do not name the drive. For M2.5, Phillips heads normally take PH1 and Torx heads T8; socket heads take 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 Dyson internal circuit board?
- TechSpareWarehouse (our own store) lists M2.5 x 4mm, M2.5 x 5mm and M2.5 x 6mm, which match lengths in the records above.