LDO Voron 2.4 300/350 kit screw size
M3 / M5 · length not stated in the sources
Our records put LDO Voron 2.4 300/350 kit on M3 and M5 screws. None of the sources we found gives an exact length, so measure the original before you order.
There are 2 separate fitment records for it, including motion system, bearing blocks, idlers, extrusion assembly (M3) and frame extrusion joining and gantry rail mounting (M5).
2 of the 2 records are marked confirmed, drawn from 1 source (docs.ldomotors.com V2.4 300/350 BOM Rev D).
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.
LDO Voron 2.4 300/350 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 | not stated | 0.5 mm | not stated | not stated | motion system, bearing blocks, idlers, extrusion assembly | Confirmed |
| M5 | not stated | 0.8 mm | not stated | not stated | frame extrusion joining and gantry rail mounting | Confirmed |
Fitment records and sources
motion system, bearing blocks, idlers, extrusion assembly
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
frame extrusion joining and gantry rail mounting
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
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 M3 screw measures about 3 mm with calipers (usually a hair under). This device also uses M5, so measure each screw rather than assuming they match.
- 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 / M5
- DIN-rail terminal blocks are near-universally M3 across Dinkle, TE, Omron and RND, but torque differs (0.5-0.8 Nm) — over-torquing an M3 terminal screw strips it instantly.
- 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.
- Ski and snowboard binding screws vary by brand and insert system (4x4, Channel, Tyrolia, Marker). Aftermarket suppliers standardise on M5/M6 but OEM screws can be a different pitch.
- GoPro also uses M5 for its classic two-prong mount thumbscrew and buckle system, while smaller GoPro chassis screws are commonly Torx-driven without a confirmed metric thread in available sources — don't conflate the mount thumbscrew size with internal chassis screws.
More in 3D Printing, CNC & Robotics
The same screw also fits
Devices whose records share a thread with LDO Voron 2.4 300/350 kit, closest length match first.
- LeRobot SO-101 arm also M3
- Bambu Lab X1 / P1 / A1 frame and toolhead also M3
- 2040 extrusion T-nuts also M5
- Voron StealthBurner toolhead (stock hotend) also M3
- Shapeoko 5 Pro CNC router also M5
- 2020 T-slot hammer head bolts also M5
- Bondtech 17-tooth steel gear also M3
- GT2 timing pulley grub screws also M3
Questions about LDO Voron 2.4 300/350 kit screws
- What size screw does LDO Voron 2.4 300/350 kit use?
- M3 for motion system, bearing blocks, idlers, extrusion assembly; M5 for frame extrusion joining and gantry rail mounting.
- How long are the screws in LDO Voron 2.4 300/350 kit?
- 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 LDO Voron 2.4 300/350 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.