Flat-pack furniture cam-lock fittings (IKEA-style knock-down) screw size
M6 · 24 to 40 mm long
Flat-pack furniture cam-lock fittings (IKEA-style knock-down) takes M6 metric screws in lengths from 24 to 40 mm.
It is listed for cam dowel screws into cam housings.
This entry is marked confirmed and comes from crecen.es.
M6 means a 6 mm nominal diameter with a 1 mm thread pitch. Imperial look-alike: 1/4in-20 (6.35 mm) — the tripod/camera thread; visibly larger than M6.
Flat-pack furniture cam-lock fittings (IKEA-style knock-down) 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 | 24–40 mm | 1 mm | not stated | not stated | cam dowel screws into cam housings | Confirmed |
Fitment records and sources
cam dowel screws into cam housings
pitch 1 mm · tap 5 mm · clearance 6.6 mm · PH3 / Torx T30
How to check the screw before you buy
- If several screws hold the same part, check that they are all the same length before assuming they are.
- 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.
- The records span 24–40 mm, which means different positions take different lengths — match each hole to its own screw.
- 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
- Astro dovetail hardware is inconsistent: Losmandy-brand dovetail plate screws are 1/4-20 (imperial) per Losmandy/Astro-Physics documentation, while PrimaLuceLab's PLUS-standard dovetails explicitly use M6 — don't assume metric across all 'Losmandy-style' dovetail ecosystems.
- TS-Optics Losmandy-style dovetail bars drill through-holes sized to accept either M6 metric screws or 1/4" imperial screws interchangeably in the same countersunk holes.
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Devices whose records share a thread with Flat-pack furniture cam-lock fittings (IKEA-style knock-down), closest length match first.
- Bosch Rexroth T-head bolt, slot 8 also M6 × 25 mm
- Furniture leveling foot also M6 × 24–40 mm
- Eschmann LS5 / SES2555 autoclave also M6 × 25 mm
- Kayak accessory rail T-bolt kit also M6 × 25 mm
- Sky-Watcher NEQ6 zero-backlash RA worm mounting kit also M6 × 35–40 mm
- Bicycle disc caliper mount (post / IS) also M6 × 24–30 mm
- Rexel S16 paper shredder also M6 × 24–40 mm
- Thule OutRide 561 Bike Rack also M6 × 40 mm
Questions about Flat-pack furniture cam-lock fittings (IKEA-style knock-down) screws
- What size screw does Flat-pack furniture cam-lock fittings (IKEA-style knock-down) use?
- M6 × 24–40 mm for cam dowel screws into cam housings.
- How long are the screws in Flat-pack furniture cam-lock fittings (IKEA-style knock-down)?
- The records range from 24 to 40 mm depending on the position, so match each screw to its own hole.
- 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 Flat-pack furniture cam-lock fittings (IKEA-style knock-down)?
- 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.