Pumpkin SUPERNOVA 6U CubeSat Structure Kit screw size
M3 · 8 to 12 mm long
The screws used on Pumpkin SUPERNOVA 6U CubeSat Structure Kit are M3 in lengths from 8 to 12 mm.
There are 2 separate fitment records for it, including structure panels fastened together with flat socket head screws, thread callout M3-0.5 (M3) and threaded rod / hex standoff stack rails and rail-end screws, Screw M3x8mm Flat Socket Head (M3).
2 of the 2 records are marked confirmed, drawn from 1 source (cubesatkit.com).
M3 means a 3 mm nominal diameter with a 0.5 mm thread pitch. Imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.
Pumpkin SUPERNOVA 6U CubeSat Structure Kit 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 | 12 mm | 0.5 mm | not stated | not stated | Structure panels fastened together with flat socket head screws, thread callout M3-0.5 | Confirmed |
| M3 | 8 mm | 0.5 mm | not stated | not stated | Threaded rod / hex standoff stack rails and rail-end screws, Screw M3x8mm Flat Socket Head | Confirmed |
Fitment records and sources
Structure panels fastened together with flat socket head screws, thread callout M3-0.5
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
Threaded rod / hex standoff stack rails and rail-end screws, Screw M3x8mm Flat Socket Head
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
How to check the screw before you buy
- Take one original screw out first and measure it before ordering; the record above tells you the thread, the original screw tells you the exact length and head.
- 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 8–12 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard 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.
- M3 is the most common FPV screw, but length must match arm and stack thickness — too long can short motor windings or crack frame plates.
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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M3 x 12mm Phillips Wafer Head Screw for Camera Cage & Battery Slide Mount - Pack of 50 Black
$6.49 -
M3 x 12mm Phillips Wafer Head Screw for Electric Scooter LCD Dashboard - Single Replacement Black
$0.10 each · min. 50
-
M3 x 8mm Screws for Leather Spike Attachments Guitar Straps 10-Pack
$4.99 -
M3 x 8mm Phillips Wafer Head Screw for SLA Resin 3D Printer VAT Film - Single Replacement Black
$0.10 each · min. 50
-
M3 x 8mm Phillips Flat Head Countersunk Machine Screws Zinc Silver 100-Pack for RC & 3D Printers
$9.99 -
M3 x 8mm Phillips Flat Head Countersunk Machine Screws Zinc Silver 10-Pack for RC & 3D Printers
$4.99 -
M3 x 12mm Phillips Wafer Head Screw for RC Car/Truck Chassis Mount - Single Replacement Black
$0.10 each · min. 50
More in Other Equipment
The same screw also fits
Devices whose records share a thread with Pumpkin SUPERNOVA 6U CubeSat Structure Kit, closest length match first.
- Star Micronics mPOP under-counter mount (CM-POP1) also M3 × 8 mm
- Hotends & heat breaks (E3D and clones) also M3 × 8 mm
- Third-party Raspberry Pi cases & HAT stacks also M3 × 8 mm
- Backscatter FLIP3.1 underwater filter frame screws (2x) also M3 × 8 mm
- Floyd Rose locking tremolo saddles also M3 × 8 mm
- PSU internals & fan grilles also M3 × 8 mm
- Kern PFB precision balance internal hardware also M3 × 12 mm
- Amiga 500 rear/front case screws (Retro32 replacement set) also M3 × 8 mm
Questions about Pumpkin SUPERNOVA 6U CubeSat Structure Kit screws
- What size screw does Pumpkin SUPERNOVA 6U CubeSat Structure Kit use?
- M3 × 12 mm for structure panels fastened together with flat socket head screws, thread callout M3-0.5; M3 × 8 mm for threaded rod / hex standoff stack rails and rail-end screws, Screw M3x8mm Flat Socket Head.
- How long are the screws in Pumpkin SUPERNOVA 6U CubeSat Structure Kit?
- The records range from 8 to 12 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 Pumpkin SUPERNOVA 6U CubeSat Structure Kit?
- 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 Pumpkin SUPERNOVA 6U CubeSat Structure Kit?
- TechSpareWarehouse (our own store) lists M3 x 12mm and M3 x 8mm, which match lengths in the records above.