RatRig V-Core 3 screw size
M6 · length not stated in the sources
Our records put RatRig V-Core 3 on M6 screws. None of the sources we found gives an exact length, so measure the original before you order.
It is listed for frame assembly washer/fastener set.
This entry is marked confirmed and comes from github.com/Rat-Rig/V-core-3 commit 06c9db2.
For reference, M6 is 6 mm across the threads at 1 mm pitch. The imperial size people confuse it with: 1/4in-20 (6.35 mm) — the tripod/camera thread; visibly larger than M6.
RatRig V-Core 3 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 |
|---|---|---|---|---|---|---|
| M6 | not stated | 1 mm | not stated | not stated | frame assembly washer/fastener setwasher / flange face | Confirmed |
Fitment records and sources
frame assembly washer/fastener set
pitch 1 mm · tap 5 mm · clearance 6.6 mm · PH3 / Torx T30
Source: github.com/Rat-Rig/V-core-3 commit 06c9db2
How to check the screw before you buy
- Into printed plastic, the screw either self-taps or needs a heat-set insert; machine screws straight into plastic strip easily.
- Diameter: across the threads an M6 screw measures about 6 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 1 mm from one thread crest to the next (10 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 M6 heads take PH3 for Phillips and T30 for Torx, and a 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 M6 is about 7-10 N·m into metal threads and 2.5-4.0 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M6
- Hygienic/3-A food-industry M6 screws are a distinct fastener class (with integrated sealing gasket/washer) from standard DIN 912 M6 socket-head screws; substituting a plain DIN 912 M6 screw on food/sanitary equipment breaks the hygienic seal even though the thread is nominally the same size.
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Devices whose records share a thread with RatRig V-Core 3, closest length match first.
- Avid CNC Laser Kit also M6
- Robotiq 2F-85 / 2F-140 gripper (Universal Robots) also M6
- Universal Robots e-Series tool flange (UR3e/UR5e/UR10e) also M6
- Carbide 3D 80mm VFD spindle mount kit also M6
- Gimatic MFI-A374-A/B mounting flange for Mechatronics grippers on UR robots also M6
- E3D V6 and clone hotend nozzles also M6
- 3030/4040 extrusion end tap also M6
- ISO 9409-1-50-4-M6 robot tool flange also M6
Questions about RatRig V-Core 3 screws
- What size screw does RatRig V-Core 3 use?
- M6 for frame assembly washer/fastener set.
- How long are the screws in RatRig V-Core 3?
- 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 M6 screw?
- 1 mm (coarse), which is the standard pitch for M6 machine screws; a 0.75 mm fine pitch exists but is uncommon. The tap drill is 5 mm and the normal clearance hole is 6.6 mm.
- What screwdriver do I need for RatRig V-Core 3?
- The sources do not name the drive. For M6, Phillips heads normally take PH3 and Torx heads T30; socket heads take a 5 mm hex key.
- Can I use an imperial screw instead of M6?
- No. Imperial look-alike: 1/4in-20 (6.35 mm) — the tripod/camera thread; visibly larger than M6. Use a true M6 screw so it does not cross-thread or strip the hole.