Flat-pack cam lock bolt screw size
M4 · 25 to 35 mm long
If you are replacing a screw on Flat-pack cam lock bolt, the thread is M4 in lengths from 25 to 35 mm.
Where it is used: the cam dowel that draws two panels together.
This entry is marked reported and comes from gripfasthardware.com.
For reference, M4 is 4 mm across the threads at 0.7 mm pitch. The imperial size people confuse it with: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.
Flat-pack cam lock bolt 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 |
|---|---|---|---|---|---|---|
| M4 | 25–35 mm | 0.7 mm | not stated | not stated | the cam dowel that draws two panels together | Reported |
Fitment records and sources
the cam dowel that draws two panels together
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
How to check the screw before you buy
- Take one original screw out first and measure it before ordering; the record above tells you the thread, the original screw tells you the exact length and head.
- Diameter: across the threads an M4 screw measures about 4 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.7 mm from one thread crest to the next (14.29 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 25–35 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M4 heads take PH2 for Phillips and T20 for Torx, and a 3 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 M4 is about 2.0-3.0 N·m into metal threads and 0.8-1.4 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M4
- Smart doorbell and lock kits bundle metric machine screws with imperial wood screws in the same bag; the metric ones are rarely labelled.
- M4 and 6-32 UNC share a nominal diameter with different pitch — a classic cross-thread in US-market kits.
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.
More in Other Equipment
The same screw also fits
Devices whose records share a thread with Flat-pack cam lock bolt, closest length match first.
- Strike plate and hinges (metric doors) also M4 × 25 mm
- Makita 6095D cordless driver drill also M4 × 35 mm
- LG 50PZ950U also M4 × 26 mm
- PC radiator fan screws (Koolance/HWLabs/Swiftech) also M4 × 25–30 mm
- LG 60PZ950U also M4 × 26 mm
- Gimbal stabilizer arm clamp also M4 × 25 mm
- LG 55LW9500 also M4 × 26 mm
- Panasonic TC-L42E60 also M4 × 25 mm
Questions about Flat-pack cam lock bolt screws
- What size screw does Flat-pack cam lock bolt use?
- M4 × 25–35 mm for the cam dowel that draws two panels together.
- How long are the screws in Flat-pack cam lock bolt?
- The records range from 25 to 35 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M4 screw?
- 0.7 mm (coarse), which is the standard pitch for M4 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 3.3 mm and the normal clearance hole is 4.5 mm.
- What screwdriver do I need for Flat-pack cam lock bolt?
- The sources do not name the drive. For M4, Phillips heads normally take PH2 and Torx heads T20; socket heads take a 3 mm hex key.
- Can I use an imperial screw instead of M4?
- No. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same. Use a true M4 screw so it does not cross-thread or strip the hole.