POS / kiosk internal PCB standoffs screw size
M3 · length not stated in the sources
The screws used on POS / kiosk internal PCB standoffs are M3. None of the sources we found gives an exact length, so measure the original before you order.
The record covers standard small-electronics standoff screws in industrial gear.
This entry is marked reported and comes from us.misumi-ec.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.
POS / kiosk internal PCB standoffs 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 | Standard small-electronics standoff screws in industrial gear | Reported |
Fitment records and sources
Standard small-electronics standoff screws in industrial gear
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
- Intel's ATX and microATX specs never state a metric standoff thread; PC motherboard standoffs are usually imperial 6-32, and PC fan screws are commonly 6-32 self-tapping.
- Model rocketry altimeter manuals (Apogee AIM USB, Rocketronics AltiMAX G4, RockeTiltometer) contain no explicit metric screw thread callouts in their documentation; mounting is typically via hook-and-loop or generic standoffs, so no metric fitment can be confirmed for this category.
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Devices whose records share a thread with POS / kiosk internal PCB standoffs, closest length match first.
- ATEN 2K-0009 secure KVM rack mount kit also M3
- Tektronix RM5 rackmount kit (5/6 Series MSO) also M3
- D-sub connector jackscrew (metric variant) also M3
- Car interior trim and dash panel screws also M3
- ICY DOCK MB344SP FLEX-FIT Quattro 5.25" bay enclosure also M3
- Linksys E7350 router also M3
- Molex Secured Wall Mount Fiber Enclosure (DSC/QLC UNLDD) also M3
- Eurorack module to rack rail also M3
Questions about POS / kiosk internal PCB standoffs screws
- What size screw does POS / kiosk internal PCB standoffs use?
- M3 for standard small-electronics standoff screws in industrial gear.
- How long are the screws in POS / kiosk internal PCB standoffs?
- 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 POS / kiosk internal PCB standoffs?
- 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.