Screws may seem like minor components, but in FPV drone assembly, they play a crucial role. They secure motors, frames, flight controllers, cameras, and other components. Using the wrong screw type or size can cause vibration issues, damage electronics, or even lead to in-flight failures.
Common FPV Drone Screw Types and Sizes
Frame Screws
- Commonly M2 or M3 screws.
- Recommended lengths: 6–10mm for small frames, 10–16mm for larger frames.
- Materials: Steel, aluminum, or titanium.
Table Example:
| Screw Type | Size | Recommended Length | Material | Typical Use |
|---|---|---|---|---|
| Frame | M3 | 6–10mm | Steel | Securing main frame plates |
| Frame | M2 | 6–8mm | Aluminum | Small accessory mounts |
Motor Mount Screws
- Usually M3 or M2.5 screws.
- Must match motor mounting holes and thread depth.
- Include anti-vibration washers to prevent loosening.
Other Specialized Screws
- Camera mount screws (M2/M2.5)
- Flight controller screws
- GoPro/HD camera mounting screws
FPV drone Screws to assemble the frame
First up, you need screws to assemble the frame. Take 5-7-inch FPV as an example, button head screws in M3 are the most commonly used screws, typically used in conjunction with standoffs. The length of it will be 8mm or 10mm, depending on each different frame. Read more about the FPV frame.
Long Screws for ESC and Flight Controllers
What’s more, there are screws in a pretty long length, like 34mm or around, these long screws are used to secure the ESC and flight controller. A small drone, like 3 inches around, will use more M2 screws. Here is the detailed guide on how to connect 4 in 1 ESC to a Flight Controller
FPV drone Screws are to mount motors
The next place to use a lot of screws is to mount the motors. We use socket head screws to mount your motors on the frame arm. Read more about the Structure of Drone Motor
There will be two different lengths of screws; the short ones will directly mount on the arm.
The longer one will mount on the arm guard. But don’t worry, the motor manufacturer will offer you the screws, but when you lose some and need replacement, be careful to use the right length one; don’t let the screws touch the motor winding.
Countersunk Screws for the Top Plate
Some frames will use countersunk screws to mount the top plate of the frame, to make it look flat and better designed.
Camera Mounting Screws
There are also some other screws used to secure specific components like the carema, camera screws usually use M2 or M1.6 in 4mm, or many longer. Alright, those are the screws you’ll generally need for FPV drone assembly.
Tips for Choosing the Right Screws for Your FPV Build
- Material Matters: Steel is strong and affordable; aluminum is lightweight but softer; titanium is strong and light but expensive.
- Length & Thread Matching: Too long can damage components; too short may not secure parts properly.
- Prevent Common Errors: Check screw compatibility with frame, motor, and accessories before assembly.
FAQ: FPV Drone Screws
- What screw size do I need for a 5-inch FPV frame?
Usually M3 screws, 6–10mm in length, depending on the frame. - Can I reuse FPV screws after a crash?
Only if they are not stripped or bent; otherwise, replace them. - How do I prevent screws from loosening during flight?
Use thread-locking glue and anti-vibration washers. - Are titanium screws worth it for FPV drones?
Yes, if you want high strength and light weight, but they are more expensive.
Conclusion
Screws are small but vital components in FPV drone builds. Selecting the right types, sizes, and materials can prevent damage, vibration issues, and crashes. Always double-check screw compatibility and use recommended tools to ensure a secure, smooth flight.