DJI Flame Wheel F450 / F550 screw size
M2 · 4.5 mm long
DJI Flame Wheel F450 / F550 takes M2 metric screws, 4.5 mm long.
It is listed for frame arm and standoff screws (M2.5x4.5 OEM sets).
This entry is marked confirmed and comes from droneimpulse.com.
M2 means a 2 mm nominal diameter with a 0.4 mm thread pitch. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable.
DJI Flame Wheel F450 / F550 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 |
|---|---|---|---|---|---|---|
| M2 | 4.5 mm | 0.4 mm | not stated | not stated | frame arm and standoff screws (M2.5x4.5 OEM sets) | Confirmed |
Fitment records and sources
frame arm and standoff screws (M2.5x4.5 OEM sets)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
How to check the screw before you buy
- If several screws hold the same part, check that they are all the same length before assuming they are.
- Diameter: across the threads an M2 screw measures about 2 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.4 mm from one thread crest to the next (25 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 4.5 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 M2 heads take PH0 for Phillips and T6 for Torx, and a 1.5 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 M2 is about 25-40 N·cm into metal threads and 12-20 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2
- M.2 SSD screw length must match the standoff position (2230/2242/2260/2280/22110) or the drive won't clamp.
- M2 (2.00mm, 0.4mm pitch) is NOT the same as #2-56 UNC (2.18mm) — close enough to cross-thread and strip if forced.
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Devices whose records share a thread with DJI Flame Wheel F450 / F550, closest length match first.
- Raspberry Pi HATs & cases also M2 × 4.5 mm
- M.2 heatsink / shield assemblies also M2 × 4.5 mm
- PS5 DualSense controller also M2 × 4.5 mm
- HP EliteBook 1040 G10 also M2 × 4.5 mm
- Lenovo ThinkPad E480 also M2 × 4.5 mm
- HP Fortis 11 G10 also M2 × 4.5 mm
- E-bike displays & controller housings also M2 × 4.5 mm
- HP OMEN 17-w2xx also M2 × 4.5 mm
Questions about DJI Flame Wheel F450 / F550 screws
- What size screw does DJI Flame Wheel F450 / F550 use?
- M2 × 4.5 mm for frame arm and standoff screws (M2.5x4.5 OEM sets).
- How long are the screws in DJI Flame Wheel F450 / F550?
- The record gives 4.5 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M2 screw?
- 0.4 mm (coarse), which is the standard pitch for M2 machine screws; a 0.25 mm fine pitch exists but is uncommon. The tap drill is 1.6 mm and the normal clearance hole is 2.4 mm.
- What screwdriver do I need for DJI Flame Wheel F450 / F550?
- The sources do not name the drive. For M2, Phillips heads normally take PH0 and Torx heads T6; socket heads take a 1.5 mm hex key.
- Can I use an imperial screw instead of M2?
- No. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable. Use a true M2 screw so it does not cross-thread or strip the hole.