CubeSat electronics stack board mounting screw size
M3 · length not stated in the sources
If you are replacing a screw on CubeSat electronics stack board mounting, the thread is M3. None of the sources we found gives an exact length, so measure the original before you order.
The record covers DIN M3 screws or M3 threaded rods with M3 spacers and washers.
This entry is marked confirmed and comes from scholarworks.wmich.edu.
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.
CubeSat electronics stack board mounting 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 | DIN M3 screws or M3 threaded rods with M3 spacers and washerswasher / flange face | Confirmed |
Fitment records and sources
DIN M3 screws or M3 threaded rods with M3 spacers and washers
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
How to check the screw before you buy
- Board standoffs and enclosure bosses set the usable length: the screw should clamp the board without bottoming in the standoff.
- 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
- 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.
- M3 (3.0mm, 0.5mm pitch) is not #6-32 UNC (~3.5mm) — they look identical and cross-thread, the single most common PC-building mistake.
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Devices whose records share a thread with CubeSat electronics stack board mounting, closest length match first.
- Hillrom Centrella Smart+ Bed control panel/electronics housing also M3
- Network switch & patch panel internals also M3
- Brother DCP-8080DN multifunction printer also M3
- Elo EMV bracket assembly special pan-head screw also M3
- HARTING Han 3A IP67 sealing screw also M3
- Generic M3x6 pan head machine screw (DIN 7985H) stock item also M3
- Keyence IV series vision sensor also M3
- Eurorack panel/module mounting screws (standard rail systems) also M3
Questions about CubeSat electronics stack board mounting screws
- What size screw does CubeSat electronics stack board mounting use?
- M3 for DIN M3 screws or M3 threaded rods with M3 spacers and washers.
- How long are the screws in CubeSat electronics stack board mounting?
- 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 CubeSat electronics stack board mounting?
- 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.