Voron Trident screw size
M3 · length not stated in the sources
The screws used on Voron Trident are M3. None of the sources we found gives an exact length, so measure the original before you order.
Where it is used: Z-axis lead screw mount and AB motor mount brackets.
This entry is marked reported and comes from VoronDesign Voron-Trident BOM.
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.
Voron Trident 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 | Z-axis lead screw mount and AB motor mount brackets | Reported |
Fitment records and sources
Z-axis lead screw mount and AB motor mount brackets
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
Source: VoronDesign Voron-Trident BOM
How to check the screw before you buy
- Printer and CNC builds usually publish a bill of materials; when it lists a length, follow it, since extrusion T-nuts and motor faces have fixed thread depths.
- 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.
- 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
- 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.
- On FPV motors, screw length is safety-critical: one turn too long and the screw crushes the motor windings. Measure arm + base depth, and dry-fit before powering up.
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Devices whose records share a thread with Voron Trident, closest length match first.
- RatRig V-Core 3.1 (200x200) also M3
- Original Prusa MK4 kit also M3
- Slice Engineering Mosquito hotend also M3
- FDM hotend and extruder mounts (general) also M3
- MASSO CNC homing sensor also M3
- Ender 3 V3 KE cooling fan brackets also M3
- Linear rail carriage block also M3
- Carbide3D Shapeoko 5 Pro CNC router also M3
Questions about Voron Trident screws
- What size screw does Voron Trident use?
- M3 for Z-axis lead screw mount and AB motor mount brackets.
- How long are the screws in Voron Trident?
- 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 Voron Trident?
- 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.