Southco polished spring-ejected captive panel fasteners screw size
M3 · length not stated in the sources
The screws used on Southco polished spring-ejected captive panel fasteners are M3. None of the sources we found gives an exact length, so measure the original before you order.
Where it is used: M3 x 0.5 captive standoff fastener for enclosures and panels; max torque 0.4 Nm.
This entry is marked confirmed and comes from media.southco.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.
Southco polished spring-ejected captive panel fasteners screw specifications
One row per fitment record. Head, drive and torque are shown only where the source states them; pitch is the ISO coarse pitch for the thread.
| Thread | Length | Pitch | Head | Drive | Torque | Where it goes | Status |
|---|---|---|---|---|---|---|---|
| M3 | not stated | 0.5 mm | not stated | not stated | 0.4 Nm | M3 x 0.5 captive standoff fastener for enclosures and panels; max torque 0.4 Nmcaptive | Confirmed |
Fitment records and sources
M3 x 0.5 captive standoff fastener for enclosures and panels; max torque 0.4 Nm
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.
Common mix-ups with M3
- Pond/aquarium equipment manuals aimed at consumers rarely specify exact thread pitch or length for internal fasteners, since these are considered non-user-serviceable; distributor-level assembly/service manuals (e.g., Maytronics internal documents) are a better source than end-user guides.
- The bioprinter M3 reference is a tube-connector thread spec, not a structural chassis screw; verify before assuming interchangeability with fastener screws.
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Devices whose records share a thread with Southco polished spring-ejected captive panel fasteners, closest length match first.
- External 3.5in HDD enclosures also M3
- Ubiquiti UniFi UAP-AC access point also M3
- Instrument enclosure base/rear panel screws (Metcase Technomet-Control rack case) also M3
- Eurorack synthesiser case (Intellijel 7U Performance Case Gen 2) also M3
- Ubiquiti UniFi AP / UAP-LR ceiling & wall mount kit also M3
- Hammond 1555F enclosure also M3
- Honeywell Vuquest 3310g barcode scanner also M3
- ifm O8 photoelectric sensor angle bracket also M3
Questions about Southco polished spring-ejected captive panel fasteners screws
- What size screw does Southco polished spring-ejected captive panel fasteners use?
- M3 for M3 x 0.5 captive standoff fastener for enclosures and panels; max torque 0.4 Nm.
- How long are the screws in Southco polished spring-ejected captive panel fasteners?
- 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 Southco polished spring-ejected captive panel fasteners?
- 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.
- How tight should the M3 screw on Southco polished spring-ejected captive panel fasteners be?
- The source gives 0.4 Nm for M3 x 0.5 captive standoff fastener for enclosures and panels; max torque 0.4 Nm.