FPV flight controller anti-vibration mount screws screw size
M3 · length not stated in the sources
FPV flight controller anti-vibration mount screws takes M3 metric screws. None of the sources we found gives an exact length, so measure the original before you order.
It is listed for stack mounting for CC3D/F3/F4/F7 flight controllers.
This entry is marked confirmed.
For reference, M3 is 3 mm across the threads at 0.5 mm pitch. The imperial size people confuse it with: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.
FPV flight controller anti-vibration mount screws 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 | not stated | 0.5 mm | not stated | not stated | stack mounting for CC3D/F3/F4/F7 flight controllers | Confirmed |
Fitment records and sources
M3confirmed
stack mounting for CC3D/F3/F4/F7 flight controllers
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
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 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: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- Driver: the source does not name the drive. Standard M3 heads take PH1 for Phillips and T10 for Torx, and a 2.5 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 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
- Nylon M3 standoffs are for vibration isolation, not load-bearing frame arms.
- M3 is the most common FPV screw, but length must match arm and stack thickness — too long can short motor windings or crack frame plates.
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Devices whose records share a thread with FPV flight controller anti-vibration mount screws, closest length match first.
- DJI Agras Agras T50/T25/T16/T20/T30 and FlyCart 30 airframe screw also M3
- REV Robotics T-slot extrusion screw (41-1907) also M3
- E-flite Gee Bee R-2 wing fixing also M3
- 5-inch brushless motor to arm also M3
- Nerf blaster thumbscrews (mid sizes) also M3
- Waters Arc HPLC oven bracket screw also M3
- ARRMA Senton (and similar 1/10 vehicles) also M3
- RC car hardware kit (1/10-1/8 Traxxas/HSP/WLtoys) also M3
Questions about FPV flight controller anti-vibration mount screws screws
- What size screw does FPV flight controller anti-vibration mount screws use?
- M3 for stack mounting for CC3D/F3/F4/F7 flight controllers.
- How long are the screws in FPV flight controller anti-vibration mount screws?
- None of the sources states a length. Remove one screw and measure it from under the head to the tip (overall for a countersunk head).
- 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 FPV flight controller anti-vibration mount screws?
- The sources do not name the drive. For M3, Phillips heads normally take PH1 and Torx heads T10; socket heads take 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.