How long are the screws in Eurorack modular synthesizer cases?

The records range from 6 to 10 mm depending on the position, so match each screw to its own hole.

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 Eurorack modular synthesizer cases?

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.

Where can I buy replacement screws for Eurorack modular synthesizer cases?

TechSpareWarehouse (our own store) lists M3 x 6mm, M3 x 8mm and M3 x 10mm, which match lengths in the records above.

Eurorack modular synthesizer cases screw size

M3 · 6 to 10 mm long

Our records put Eurorack modular synthesizer cases on M3 screws in lengths from 6 to 10 mm.

The record covers M3 module-mounting screws into sliding rail nuts (most common Eurorack size).

This entry is marked reported and comes from shuntool.com.

An M3 screw is 3 mm in diameter with a 0.5 mm pitch, tapped with a 2.5 mm drill; imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.

Eurorack modular synthesizer cases 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	6–10 mm	0.5 mm	not stated	not stated	M3 module-mounting screws into sliding rail nuts (most common Eurorack size)	Reported

Fitment records and sources

M36, 8 or 10mmreported

M3 module-mounting screws into sliding rail nuts (most common Eurorack size)

pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10

Source

How to check the screw before you buy

Rack and enclosure hardware mixes metric and imperial (#8-32, #10-32, #6-32), so confirm the thread before forcing a screw.
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.
The records span 6–10 mm, which means different positions take different lengths — match each hole to its own screw.
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

Eurorack is a strong known case with two competing metric standards (M2.5 for Vector rails, M3 for Schroff/DIN-style and 3U threaded rails); mixing rail types requires matching screw/nut thread.
Eurorack rail thread varies by manufacturer: some tapped M2.5, some M3 — not a single universal standard.

Pitch gauge · Screw size finder · Torque guide

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.

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The same screw also fits

Devices whose records share a thread with Eurorack modular synthesizer cases, closest length match first.

Metcase Technomet-Control instrument enclosure also M3 × 6–8 mm
Samsung WA50M7450AW top-load washer service manual - control board/wire harness connector screws also M3 × 8 mm
J-GUANG 301R / 2EDGK-5.0 & 5.08 PCB screw terminal block also M3 × 6 mm
Canford D-series BNC panel connector (broadcast/RF) also M3 × 6–10 mm
2.5in SATA / SAS hard drives and SSDs (SFF-8201) also M3 × 6–7 mm
Eurorack module panel mounting also M3 × 6–10 mm
Omron E3T ultracompact photoelectric sensor (used for conveyor/AGV object detection) also M3 × 6–10 mm
PEM self-clinching flush-head stud, sheet-metal enclosures (ATM/kiosk/POS chassis use case) also M3 × 6 mm

Questions about Eurorack modular synthesizer cases screws

What size screw does Eurorack modular synthesizer cases use?: M3 × 6–10 mm for M3 module-mounting screws into sliding rail nuts (most common Eurorack size).
How long are the screws in Eurorack modular synthesizer cases?: The records range from 6 to 10 mm depending on the position, so match each screw to its own hole.
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 Eurorack modular synthesizer cases?: 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.
Where can I buy replacement screws for Eurorack modular synthesizer cases?: TechSpareWarehouse (our own store) lists M3 x 6mm, M3 x 8mm and M3 x 10mm, which match lengths in the records above.

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