What size screw does Voron Stealthburner toolhead use?

M3 for fan shroud, Clockwork 2 extruder body, ADXL mount; M3 × 10–16 mm for extruder motor mount screws.

How long are the screws in Voron Stealthburner toolhead?

The records range from 10 to 16 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 Voron Stealthburner 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.

Where can I buy replacement screws for Voron Stealthburner toolhead?

TechSpareWarehouse (our own store) lists M3 x 10mm, M3 x 12mm and M3 x 14mm, which match lengths in the records above.

Voron Stealthburner toolhead screw size

M3 · 10 to 16 mm long

The screws used on Voron Stealthburner toolhead are M3 in lengths from 10 to 16 mm.

There are 2 separate fitment records for it, including fan shroud, Clockwork 2 extruder body, ADXL mount (M3) and extruder motor mount screws (M3).

2 of the 2 records are marked confirmed, drawn from 2 sources (Voron StealthBurner Assembly Manual 2023-07-07 and github.com).

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.

Voron Stealthburner 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, Clockwork 2 extruder body, ADXL mount	Confirmed
M3	10–16 mm	0.5 mm	not stated	not stated	Extruder motor mount screws	Confirmed

Fitment records and sources

M3assortedconfirmed

fan shroud, Clockwork 2 extruder body, ADXL mount

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

Source: Voron StealthBurner Assembly Manual 2023-07-07

M310-16 mmconfirmed

Extruder motor mount screws

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

Source

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.
The records span 10–16 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

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.
GoPro's own official Dive Housing user guide does not itself state a metric screw size for the housing body; only third-party accessory manufacturer (INON) manuals explicitly cite M6 screws for their add-on arms/adapters attaching to the housing.

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.

M3 x 10mm Phillips Wafer Head Screw for Sim Racing Wheel Paddle Shifter - Single Replacement Black $0.10 each · min. 50
M3 x 10mm Phillips Wafer Head Screw for RC Car/Truck Chassis Mount - Single Replacement Black $0.10 each · min. 50
M3 x 12mm Phillips Wafer Head Screw for Camera Cage & Battery Slide Mount - Pack of 50 Black $6.49
M3 x 12mm Phillips Wafer Head Screw for Electric Scooter LCD Dashboard - Single Replacement Black $0.10 each · min. 50
M3 x 14mm Phillips Wafer Head Screw for Camera Cage & Battery Slide Mount - Pack of 50 Black $6.99
M3 x 14mm Phillips Wafer Head Screw for 3D Printer Extruder Stepper Motor - Single Replacement Black $0.10 each · min. 50
M3 x 10mm Phillips Wafer Head Screw for 3D Printer Frame Assembly - Single Replacement Black $0.10 each · min. 50
M3 x 12mm Phillips Wafer Head Screw for RC Car/Truck Chassis Mount - Single Replacement Black $0.10 each · min. 50

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The same screw also fits

Devices whose records share a thread with Voron Stealthburner toolhead, closest length match first.

Voron 2.4 electronics bay also M3 × 10 mm
Prusa MK4 Nextruder also M3 × 10–16 mm
Ultimaker Original heated bed / Z-stage upgrade kit also M3 × 10–16 mm
NEMA 17 stepper motor mounting also M3 × 10–14 mm
REV Robotics hex standoffs also M3 × 15 mm
Bambu Lab X1/P1 General machine screws throughout the printer also M3 × 10 mm
Arduino Mega 2560 mounting holes also M3 × 10 mm
Ender 3 V2 hotend and hotend cover also M3 × 10–12 mm

Questions about Voron Stealthburner toolhead screws

What size screw does Voron Stealthburner toolhead use?: M3 for fan shroud, Clockwork 2 extruder body, ADXL mount; M3 × 10–16 mm for extruder motor mount screws.
How long are the screws in Voron Stealthburner toolhead?: The records range from 10 to 16 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 Voron Stealthburner 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.
Where can I buy replacement screws for Voron Stealthburner toolhead?: TechSpareWarehouse (our own store) lists M3 x 10mm, M3 x 12mm and M3 x 14mm, which match lengths in the records above.

Heads up: shipping delay