Micro drone frame arms screw size
M1.6 · 5 to 8 mm long
The screws used on Micro drone frame arms are M1.6 in lengths from 5 to 8 mm.
The record covers arm-to-body screws needing more length than motor screws.
This entry is marked reported and comes from nordfpv.com.
M1.6 means a 1.6 mm nominal diameter with a 0.35 mm thread pitch. Imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent.
Micro drone frame arms 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 |
|---|---|---|---|---|---|---|
| M1.6 | 5–8 mm | 0.35 mm | not stated | not stated | arm-to-body screws needing more length than motor screws | Reported |
Fitment records and sources
arm-to-body screws needing more length than motor screws
pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5
How to check the screw before you buy
- Vibration loosens small screws on drones and RC models, so builders commonly add a drop of medium (blue) threadlocker on metal-to-metal joints — never on plastic.
- Diameter: across the threads an M1.6 screw measures about 1.6 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.35 mm from one thread crest to the next (28.57 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 5–8 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M1.6 heads take PH00 for Phillips and T4–T5 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 M1.6 is about 12-20 N·cm into metal threads and 6-10 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M1.6
- M1.6 is the most common laptop-internal micro screw after M2 — Dell XPS keyboards specifically call out M1.6 x 1.5mm, and generic M2 substitutes strip the bracket.
- BETAFPV sells the same motor mount in M1.4x3 and M1.6x4 — match the motor's tapped hole or you cross-thread it.
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 Micro drone frame arms, closest length match first.
- DJI O3 Air Unit also M1.6 × 5 mm
- RC micro helicopters also M1.6 × 5 mm
- Eyeglass eyewire/rim screw (Tabco SM411) also M1.6 × 5.2 mm
- Steam Deck (LCD) backplate — inner screws also M1.6 × 5 mm
- Lenovo Yoga Slim 7 Ultra 14IPH11 also M1.6 × 7 mm
- Dental handpiece head also M1.6 × 5–6 mm
- Eyeglass hinge screw (heavier frames) also M1.6 × 5 mm
- Dell G7 17 7700 also M1.6 × 5 mm
Questions about Micro drone frame arms screws
- What size screw does Micro drone frame arms use?
- M1.6 × 5–8 mm for arm-to-body screws needing more length than motor screws.
- How long are the screws in Micro drone frame arms?
- The records range from 5 to 8 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M1.6 screw?
- 0.35 mm (coarse), which is the standard pitch for M1.6 machine screws; a 0.2 mm fine pitch exists but is uncommon. The tap drill is 1.25 mm and the normal clearance hole is 1.8 mm.
- What screwdriver do I need for Micro drone frame arms?
- The sources do not name the drive. For M1.6, Phillips heads normally take PH00 and Torx heads T4–T5; socket heads take a 1.5 mm hex key.
- Can I use an imperial screw instead of M1.6?
- No. Imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent. Use a true M1.6 screw so it does not cross-thread or strip the hole.