Eurorack modular synth cases (e.g. Make Noise Skiff) screw size
M2.5 · length not stated in the sources
Eurorack modular synth cases (e.g. Make Noise Skiff) takes M2.5 metric screws. None of the sources we found gives an exact length, so measure the original before you order.
The record covers M2.5 module screws with sliding square nuts used by some case makers.
This entry is marked reported and comes from shuntool.com.
For reference, M2.5 is 2.5 mm across the threads at 0.45 mm pitch. The imperial size people confuse it with: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in.
Eurorack modular synth cases (e.g. Make Noise Skiff) 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 |
|---|---|---|---|---|---|---|
| M2.5 | not stated | 0.45 mm | not stated | not stated | M2.5 module screws with sliding square nuts used by some case makers | Reported |
Fitment records and sources
M2.5 module screws with sliding square nuts used by some case makers
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
How to check the screw before you buy
- Into printed plastic, the screw either self-taps or needs a heat-set insert; machine screws straight into plastic strip easily.
- Diameter: across the threads an M2.5 screw measures about 2.5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.45 mm from one thread crest to the next (22.22 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 M2.5 heads take PH1 for Phillips and T8 for Torx, and a 2 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 M2.5 is about 45-70 N·cm into metal threads and 20-35 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2.5
- Eurorack rail thread depends on rail brand: Vector/SynthRacks rails use M2.5, others use M3.
- M2.5 pitch is 0.45mm vs M3's 0.5mm and M2's 0.4mm — forcing the wrong one strips plastic bosses instantly.
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The same screw also fits
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- micro:bit enclosure mounting also M2.5
- NVIDIA Jetson Orin Nano / Xavier NX carrier also M2.5
- SG90 micro servo case also M2.5
- Makeblock mBot Neo/mBot2 assembly kit also M2.5
- Klipper toolhead PCBs (Voron/BTT boards) also M2.5
- Raspberry Pi Compute Module 4 carrier/IO board also M2.5
Questions about Eurorack modular synth cases (e.g. Make Noise Skiff) screws
- What size screw does Eurorack modular synth cases (e.g. Make Noise Skiff) use?
- M2.5 for M2.5 module screws with sliding square nuts used by some case makers.
- How long are the screws in Eurorack modular synth cases (e.g. Make Noise Skiff)?
- 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 M2.5 screw?
- 0.45 mm (coarse), which is the standard pitch for M2.5 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.05 mm and the normal clearance hole is 2.9 mm.
- What screwdriver do I need for Eurorack modular synth cases (e.g. Make Noise Skiff)?
- The sources do not name the drive. For M2.5, Phillips heads normally take PH1 and Torx heads T8; socket heads take a 2 mm hex key.
- Can I use an imperial screw instead of M2.5?
- No. Imperial look-alike: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in. Use a true M2.5 screw so it does not cross-thread or strip the hole.