LED video wall cabinet headless bolt E screw size
M4 · 6 to 8 mm long
The screws used on LED video wall cabinet headless bolt E are M4 in lengths from 6 to 8 mm.
It is listed for headless M4 bolt on the outer cabinet edge closes inter-cabinet gaps.
This entry is marked confirmed and comes from shop.foxway.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.
LED video wall cabinet headless bolt E 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 | 6–8 mm | 0.7 mm | not stated | not stated | Headless M4 bolt on the outer cabinet edge closes inter-cabinet gaps | Confirmed |
Fitment records and sources
Headless M4 bolt on the outer cabinet edge closes inter-cabinet gaps
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
How to check the screw before you buy
- For a wall or arm mount, the screw has to engage the threaded insert by several turns but must not bottom out, so measure the insert depth and add the thickness of the bracket and any spacers.
- 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 6–8 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
- Display mounts mix systems: the screen side is metric M4/M6, but the wall side of many mounts uses imperial wood screws such as #14 x 2.5in.
- JCM bill-acceptor manual warns that if the host cabinet mounting bracket is only 2mm thick, standard-length M4 screws will not seat correctly — screw length must be matched to bracket thickness.
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Devices whose records share a thread with LED video wall cabinet headless bolt E, closest length match first.
- Raspberry Pi VESA adapter plates also M4 × 8 mm
- LG 42LM6400 also M4 × 8 mm
- TSC MB241/MB341 industrial barcode printer also M4 × 8 mm
- Acer / ASUS / BenQ monitors also M4 × 8 mm
- HP EliteDisplay / ProDisplay also M4 × 8 mm
- Washing machine control panel also M4 × 8 mm
- Acer XR342CK also M4 × 8 mm
- LG 47LM6400 also M4 × 8 mm
Questions about LED video wall cabinet headless bolt E screws
- What size screw does LED video wall cabinet headless bolt E use?
- M4 × 6–8 mm for headless M4 bolt on the outer cabinet edge closes inter-cabinet gaps.
- How long are the screws in LED video wall cabinet headless bolt E?
- The records range from 6 to 8 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 LED video wall cabinet headless bolt E?
- 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.