Voron Afterburner toolhead screw size
M3 · length not stated in the sources
Our records put Voron Afterburner toolhead on M3 screws. None of the sources we found gives an exact length, so measure the original before you order.
Where it is used: fan shroud, hotend clamp, extruder mount.
This entry is marked confirmed and comes from VoronDesign official Afterburner 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 Afterburner toolhead 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 | fan shroud, hotend clamp, extruder mount | Confirmed |
Fitment records and sources
fan shroud, hotend clamp, extruder mount
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
Source: VoronDesign official Afterburner BOM
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). 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
- Terminal-block clamp screws have manufacturer-specific torque values — over-tightening cracks the block or crushes the wire.
- M3 (3.0mm, 0.5mm pitch) is not #6-32 UNC (~3.5mm) — they look identical and cross-thread, the single most common PC-building mistake.
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Devices whose records share a thread with Voron Afterburner toolhead, closest length match first.
- SO-100 / SO-ARM100 robot arm (LeRobot) also M3
- SIBOOR Voron 2.4 350 / Voron 0.2 R1 kits also M3
- MGN9 linear rail also M3
- OpenBuilds gantry plate brackets also M3
- VEX / Actobotics channel and gussets also M3
- MGN12 linear rail also M3
- 2020 extrusion T-nuts (light duty) also M3
- NEMA 17 stepper motor face also M3
Questions about Voron Afterburner toolhead screws
- What size screw does Voron Afterburner toolhead use?
- M3 for fan shroud, hotend clamp, extruder mount.
- How long are the screws in Voron Afterburner toolhead?
- 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 Afterburner toolhead?
- 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.