How long are the screws in PW-Sat2 CubeSat structural frame?

The records range from 5 to 8 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 PW-Sat2 CubeSat structural frame?

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 PW-Sat2 CubeSat structural frame?

TechSpareWarehouse (our own store) lists M3 x 5mm, M3 x 6mm and M3 x 8mm, which match lengths in the records above.

PW-Sat2 CubeSat structural frame screw size

M3 · 5 to 8 mm long

PW-Sat2 CubeSat structural frame takes M3 metric screws in lengths from 5 to 8 mm.

The record covers M3 x 8mm and M3 x 6mm ISO 10642 countersunk screws joining X/Y/Z frames into M3x3 Helicoil inserts; four M3 PC/104 stacking rods.

Head and drive, as the source states them: flat / countersunk head.

This entry is marked confirmed and comes from pw-sat.pl.

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.

PW-Sat2 CubeSat structural frame 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	5–8 mm	0.5 mm	Flat / countersunk	not stated	M3 x 8mm and M3 x 6mm ISO 10642 countersunk screws joining X/Y/Z frames into M3x3 Helicoil inserts; four M3 PC/104 stacking rods	Confirmed

Fitment records and sources

M35-8mmconfirmed

M3 x 8mm and M3 x 6mm ISO 10642 countersunk screws joining X/Y/Z frames into M3x3 Helicoil inserts; four M3 PC/104 stacking rods

pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10

Source

How to check the screw before you buy

A screw that is even 1 mm too long in a laptop base can push into the keyboard, battery or a board trace, so match the length position by position.
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: the source describes a countersunk (flat) head, and those are measured overall, from the top of the head to the tip.
The records span 5–8 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

The bioprinter M3 reference is a tube-connector thread spec, not a structural chassis screw; verify before assuming interchangeability with fastener screws.
ISO 14581 Torx countersunk screws look like plain countersunk screws but need the right lobe driver; a Phillips bit will chew the head.

Pitch gauge · Screw size finder · Torque guide

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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The same screw also fits

Devices whose records share a thread with PW-Sat2 CubeSat structural frame, closest length match first.

Dell Latitude D520 also M3 × 5 mm
Dell Latitude 7424 also M3 × 6 mm
Lenovo ThinkPad 390X also M3 × 5 mm
Dell Inspiron X200 also M3 × 5 mm
Dell Inspiron 2500 also M3 × 5 mm
Lenovo ThinkPad 1720 also M3 × 5 mm
Lenovo ThinkPad R61i also M3 × 6 mm
Hammond 1555JL (part 1591MM100) Steel panel / PC board mounting screw for enclosure inner panels also M3 × 8 mm

Questions about PW-Sat2 CubeSat structural frame screws

What size screw does PW-Sat2 CubeSat structural frame use?: M3 × 5–8 mm for M3 x 8mm and M3 x 6mm ISO 10642 countersunk screws joining X/Y/Z frames into M3x3 Helicoil inserts; four M3 PC/104 stacking rods.
How long are the screws in PW-Sat2 CubeSat structural frame?: The records range from 5 to 8 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 PW-Sat2 CubeSat structural frame?: 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 PW-Sat2 CubeSat structural frame?: TechSpareWarehouse (our own store) lists M3 x 5mm, M3 x 6mm and M3 x 8mm, which match lengths in the records above.

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