GoPro-style action cam mount on FPV frames screw size
M4 · 15 to 20 mm long
GoPro-style action cam mount on FPV frames takes M4 metric screws in lengths from 15 to 20 mm.
Where it is used: M4 screw plus locknut for GoPro tab mounts.
This entry is marked confirmed and comes from buzzfpv.com.au.
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.
GoPro-style action cam mount on FPV frames 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 | 15–20 mm | 0.7 mm | not stated | not stated | M4 screw plus locknut for GoPro tab mounts | Confirmed |
Fitment records and sources
M4 screw plus locknut for GoPro tab mounts
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
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 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 records span 15–20 mm, which means different positions take different lengths — match each hole to its own screw.
- 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
- Display mounts mix systems: the screen side is metric M4/M6, but the wall side of many mounts uses imperial wood screws such as #14 x 2.5in.
- 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.
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.
More in Drones, RC & Gimbals
The same screw also fits
Devices whose records share a thread with GoPro-style action cam mount on FPV frames, closest length match first.
- Meccano boxed sets (modern metric era) and compatible parts also M4 × 15–20 mm
- European mortise lock faceplates also M4 × 15–20 mm
- goBILDA metric building system also M4 × 15–20 mm
- Mid-size drone frames also M4 × 15–16 mm
- Sewing machine motor mount also M4 × 15–20 mm
- Nerf blaster thumbscrews (large) also M4 × 15–20 mm
- Underwater camera housing latch and port also M4 × 15 mm
- LG 55LV5500 also M4 × 16 mm
Questions about GoPro-style action cam mount on FPV frames screws
- What size screw does GoPro-style action cam mount on FPV frames use?
- M4 × 15–20 mm for M4 screw plus locknut for GoPro tab mounts.
- How long are the screws in GoPro-style action cam mount on FPV frames?
- The records range from 15 to 20 mm depending on the position, so match each screw to its own hole.
- 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 GoPro-style action cam mount on FPV frames?
- 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.