Electronics enclosures screw size
M4 · 6 to 12 mm long
If you are replacing a screw on Electronics enclosures, the thread is M4 in lengths from 6 to 12 mm.
The record covers chassis lids and PCB standoffs.
This entry is marked reported.
M4 means a 4 mm nominal diameter with a 0.7 mm thread pitch. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.
Electronics enclosures 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 |
|---|---|---|---|---|---|---|
| M4 | 6–12 mm | 0.7 mm | not stated | not stated | chassis lids and PCB standoffs | Reported |
Fitment records and sources
chassis lids and PCB standoffs
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
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 M4 screw measures about 4 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.7 mm from one thread crest to the next (14.29 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 6–12 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M4 heads take PH2 for Phillips and T20 for Torx, and a 3 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 M4 is about 2.0-3.0 N·m into metal threads and 0.8-1.4 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M4
- Most HVAC chassis hardware in US-market units is imperial; metric shows up mainly on European-made components.
- Some rackmount KVM switch kits pair M4x10 bracket-to-rack screws with M3.2x4.5 bracket-to-chassis screws (non-standard M3.2, not a true M3), so kits are not fully interchangeable with generic M3/M4 hardware.
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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Devices whose records share a thread with Electronics enclosures, closest length match first.
- EVoCharge EVSE charging station (EV charging kiosk electronics enclosure) also M4 × 10 mm
- UniFi rack shelf and tray hardware also M4 × 10–12 mm
- J-GUANG 2EDGKM-7.62 high-current power terminal block also M4 × 10 mm
- Keystone Electronics metric nylon standoff also M4 × 10–11 mm
- Neopost/Paper-Machines 7104 Series High-Volume Modular Inserter (mailroom sorting/inserting machine) also M4 × 10 mm
- Panasonic AW-RC400 pan/tilt control panel rack-mounting adaptors also M4 × 8 mm
- Marine electronics housings also M4 × 8–12 mm
- Soundbar wall brackets also M4 × 6–10 mm
Questions about Electronics enclosures screws
- What size screw does Electronics enclosures use?
- M4 × 6–12 mm for chassis lids and PCB standoffs.
- How long are the screws in Electronics enclosures?
- The records range from 6 to 12 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M4 screw?
- 0.7 mm (coarse), which is the standard pitch for M4 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 3.3 mm and the normal clearance hole is 4.5 mm.
- What screwdriver do I need for Electronics enclosures?
- The sources do not name the drive. For M4, Phillips heads normally take PH2 and Torx heads T20; socket heads take a 3 mm hex key.
- Can I use an imperial screw instead of M4?
- No. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same. Use a true M4 screw so it does not cross-thread or strip the hole.