Nest Doorbell (battery) screw size
M3 · 12 mm long
Our records put Nest Doorbell (battery) on M3 screws, 12 mm long.
Where it is used: screw-size reference page states the Nest Doorbell (battery) uses 'M3-0.5 x 12 mm Phillips Pan Head Zinc Plated Machine Screws as wedge screws' for the mounting wedge.
Head and drive, as the source states them: pan head and Phillips drive.
This entry is marked reported and comes from shuntool.com.
M3 means a 3 mm nominal diameter with a 0.5 mm thread pitch. Imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.
Nest Doorbell (battery) 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 |
|---|---|---|---|---|---|---|
| M3 | 12 mm | 0.5 mm | Pan head | Phillips | Screw-size reference page states the Nest Doorbell (battery) uses 'M3-0.5 x 12 mm Phillips Pan Head Zinc Plated Machine Screws as wedge screws' for the mounting wedge | Reported |
Fitment records and sources
Screw-size reference page states the Nest Doorbell (battery) uses 'M3-0.5 x 12 mm Phillips Pan Head Zinc Plated Machine Screws as wedge screws' for the mounting wedge
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
How to check the screw before you buy
- Check the strength class stamped on the head (8.8, 10.9, A2-70) and replace like for like.
- Diameter: across the threads an M3 screw measures about 3 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.5 mm from one thread crest to the next (20 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
- Length: for pan head screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
- The record states 12 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 M3 heads take PH1 (Phillips) or T10 (Torx), or a 2.5 mm hex key.
- Tightening: no device-specific torque is published in these records. The site's general figure for M3 is about 80-130 N·cm into metal threads and 35-60 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M3
- Suunto dive computer service manuals reference strap pins and battery compartment springs but do not explicitly cite a metric screw thread size in the sections reviewed; do not infer M2/M2.5 fitment for Suunto dive computer straps without direct confirmation.
- GE patient monitors often use 'PT 3x10mm' screws; these are thread-forming screws for plastic and are NOT standard M3 machine threads.
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.
-
M3 x 12mm Phillips Wafer Head Screw for Camera Cage & Battery Slide Mount - Pack of 50 Black
$6.49 -
M3 x 12mm Phillips Wafer Head Screw for Electric Scooter LCD Dashboard - Single Replacement Black
$0.10 each · min. 50
-
M3 x 12mm Phillips Wafer Head Screw for RC Car/Truck Chassis Mount - Single Replacement Black
$0.10 each · min. 50
More in Industrial & Machinery
The same screw also fits
Devices whose records share a thread with Nest Doorbell (battery), closest length match first.
- Milwaukee M18/M12 charger and cordless tool internals also M3 × 12 mm
- Power tool trigger switch also M3 × 12 mm
- VEX / Actobotics channel and gussets also M3 × 12 mm
- OpenBuilds gantry plate brackets also M3 × 12 mm
- 2020 extrusion T-nuts (light duty) also M3 × 12 mm
- FPV flight controller stack 30.5x30.5mm also M3 × 12 mm
- Vulcan-Hart Chef combi oven also M3 × 12 mm
- Prusa MINI frame and extruder also M3 × 12 mm
Questions about Nest Doorbell (battery) screws
- What size screw does Nest Doorbell (battery) use?
- M3 × 12 mm for screw-size reference page states the Nest Doorbell (battery) uses 'M3-0.5 x 12 mm Phillips Pan Head Zinc Plated Machine Screws as wedge screws' for the mounting wedge.
- How long are the screws in Nest Doorbell (battery)?
- The record gives 12 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M3 screw?
- 0.5 mm (coarse), which is the standard pitch for M3 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.5 mm and the normal clearance hole is 3.4 mm.
- What screwdriver do I need for Nest Doorbell (battery)?
- The source lists a Phillips drive. Standard M3 heads otherwise take PH1 (Phillips) or T10 (Torx), or a 2.5 mm hex key.
- Can I use an imperial screw instead of M3?
- No. Imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3. Use a true M3 screw so it does not cross-thread or strip the hole.
- Where can I buy replacement screws for Nest Doorbell (battery)?
- TechSpareWarehouse (our own store) lists M3 x 12mm, which matches the length in the records above.