CCTV dome camera adaptor plate screw size
M4 · 15 mm long
The screws used on CCTV dome camera adaptor plate are M4, 15 mm long.
The record covers camera base attaches to the adaptor plate with three M4 x 15mm screws per the installation guide.
This entry is marked confirmed and comes from tycosecurityproducts.in.
An M4 screw is 4 mm in diameter with a 0.7 mm pitch, tapped with a 3.3 mm drill; imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.
CCTV dome camera adaptor plate 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 |
|---|---|---|---|---|---|---|
| M4 | 15 mm | 0.7 mm | not stated | not stated | Camera base attaches to the adaptor plate with three M4 x 15mm screws per the installation guide | Confirmed |
Fitment records and sources
Camera base attaches to the adaptor plate with three M4 x 15mm screws per the installation guide
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
How to check the screw before you buy
- For a wall or arm mount, the screw has to engage the threaded insert by several turns but must not bottom out, so measure the insert depth and add the thickness of the bracket and any spacers.
- Diameter: across the threads an M4 screw measures about 4 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.7 mm from one thread crest to the next (14.29 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 15 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- Driver: the source does not name the drive. Standard M4 heads take PH2 for Phillips and T20 for Torx, and a 3 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 M4 is about 2.0-3.0 N·m into metal threads and 0.8-1.4 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M4
- Dashcam mounts advertised as '1/4" M4 screw joint' have two different threads: the 1/4"-20 camera thread and a separate M4 grub screw for the ball joint — don't order the wrong one.
- Camera rig/cage accessories (SmallRig, Wooden Camera/Metabones) frequently mix M4 structural screws with 1/4-20 and 3/8-16 imperial mounting points on the same product — verify which specific fastener a manual is referencing before ordering replacements.
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Devices whose records share a thread with CCTV dome camera adaptor plate, closest length match first.
- Telescope knurled locking/tension screw for diagonals, adapters, focusers also M4 × 15 mm
- LED downlight trim and driver also M4 × 15 mm
- Monitor arms (Ergotron LX and generic) also M4 × 15 mm
- Samsung range / wall oven also M4 × 15 mm
- TV back panel also M4 × 15 mm
- Speaker grille and handle hardware also M4 × 15 mm
- GCX 75/100mm VESA flush display mount also M4 × 15 mm
- Atdec Telehook TH-2250-VF display wall mount also M4 × 15 mm
Questions about CCTV dome camera adaptor plate screws
- What size screw does CCTV dome camera adaptor plate use?
- M4 × 15 mm for camera base attaches to the adaptor plate with three M4 x 15mm screws per the installation guide.
- How long are the screws in CCTV dome camera adaptor plate?
- The record gives 15 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M4 screw?
- 0.7 mm (coarse), which is the standard pitch for M4 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 3.3 mm and the normal clearance hole is 4.5 mm.
- What screwdriver do I need for CCTV dome camera adaptor plate?
- The sources do not name the drive. For M4, Phillips heads normally take PH2 and Torx heads T20; socket heads take a 3 mm hex key.
- Can I use an imperial screw instead of M4?
- No. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same. Use a true M4 screw so it does not cross-thread or strip the hole.