Happy HCR Series Computerized Embroidery Machine screw size
M3 · 6 mm long
If you are replacing a screw on Happy HCR Series Computerized Embroidery Machine, the thread is M3, 6 mm long.
It is listed for maintenance manual specifies M3 x 6mm screws for internal sensor/board fixation during adjustment procedures.
This entry is marked confirmed and comes from happyemb.com.
For reference, M3 is 3 mm across the threads at 0.5 mm pitch. The imperial size people confuse it with: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.
Happy HCR Series Computerized Embroidery Machine 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 mm | 0.5 mm | not stated | not stated | Maintenance manual specifies M3 x 6mm screws for internal sensor/board fixation during adjustment procedures | Confirmed |
Fitment records and sources
Maintenance manual specifies M3 x 6mm screws for internal sensor/board fixation during adjustment procedures
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
How to check the screw before you buy
- Industrial parts lists usually give the full callout (thread, length, head, grade); match all four, not just the thread.
- 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 record states 6 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- 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
- Sonos speakers mix lengths within one unit — M3 for driver housings, M2.5 at the control panel. Keep them sorted during teardown.
- Label printer parts lists write M3*6 with an asterisk; that is still a true ISO M3 x 6mm machine screw.
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.
-
M3 x 6mm Replacement Screws for XLR Audio Connectors Phillips Wafer Head 50-Pack
$4.99 -
M3 x 6mm Phillips Wafer Head Carbon Steel Machine Screws for XLR Audio Connectors | 50-Pack (Black)
$4.99
-
M3 x 6mm Phillips Wafer Head Screw for 3D Printer Frame Assembly - Single Replacement Black
$0.10 each · min. 50
-
M3 x 6mm Phillips Wafer Head Screw for Boutique Guitar Pedal Enclosure - Single Replacement Black
$0.10 each · min. 50
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Devices whose records share a thread with Happy HCR Series Computerized Embroidery Machine, closest length match first.
- GCX barcode scanner adapter kit also M3 × 6 mm
- Diebold Nixdorf ATM currency stacker (PN 29016399000B) also M3 × 6 mm
- COSEL power supply terminal block (used in industrial/pump/water-treatment control panels) also M3 × 6 mm
- Prusa i3 MK3S/MK4 printed parts and extruder also M3 × 6 mm
- Dell P2417H also M3 × 6 mm
- Dell U3818DW also M3 × 6 mm
- Dell UltraSharp U2725QE monitor also M3 × 6 mm
- Dell P2017H also M3 × 6 mm
Questions about Happy HCR Series Computerized Embroidery Machine screws
- What size screw does Happy HCR Series Computerized Embroidery Machine use?
- M3 × 6 mm for maintenance manual specifies M3 x 6mm screws for internal sensor/board fixation during adjustment procedures.
- How long are the screws in Happy HCR Series Computerized Embroidery Machine?
- The record gives 6 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- 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 Happy HCR Series Computerized Embroidery Machine?
- 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 Happy HCR Series Computerized Embroidery Machine?
- TechSpareWarehouse (our own store) lists M3 x 6mm, which matches the length in the records above.