LG 47LM6400 screw size
M4 · 8 to 20 mm long
Our records put LG 47LM6400 on M4 screws in lengths from 8 to 20 mm.
There are 3 separate fitment records for it, including stand (M4), accessory (M4) and stand (M4).
3 of the 3 records are marked confirmed, drawn from 1 source (gscs-b2c.lge.com).
M4 means a 4 mm nominal diameter with a 0.7 mm thread pitch. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.
LG 47LM6400 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 | 20 mm | 0.7 mm | not stated | not stated | Stand | Confirmed |
| M4 | 8 mm | 0.7 mm | not stated | not stated | Accessory | Confirmed |
| M4 | 8 mm | 0.7 mm | not stated | not stated | Stand | Confirmed |
Fitment records and sources
Stand
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
Accessory
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
Stand
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
How to check the screw before you buy
- VESA holes are threaded inserts in the back cover; if a screw stops early, back it out rather than forcing it, because a bottomed-out screw can crack the panel housing.
- 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 8–20 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
- Not all telescope/finder hardware is metric — Celestron Edge/NexStar SE finder-shoe and dovetail screws are reported as 8/32 (imperial UNC), so metric M4/M5 fitments cannot be assumed across all Celestron products; must check per accessory/vintage.
- Dashcam mounts advertised as '1/4" M4 screw joint' have two different threads: the 1/4"-20 camera thread and a separate M4 grub screw for the ball joint — don't order the wrong one.
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 Displays, TVs & Mounts
The same screw also fits
Devices whose records share a thread with LG 47LM6400, closest length match first.
- LG 60PZ950U also M4 × 20 mm
- LG 55LW9500 also M4 × 20 mm
- VESA MIS-D 75/100 display mount also M4 × 8 mm
- LED downlight trim and driver also M4 × 8 mm
- Monitor VESA 75x75 / 100x100 also M4 × 8 mm
- LG 50PZ950U also M4 × 20 mm
- TSC MB241/MB341 industrial barcode printer also M4 × 8 mm
- LED video wall cabinet headless bolt E also M4 × 8 mm
Questions about LG 47LM6400 screws
- What size screw does LG 47LM6400 use?
- M4 × 20 mm for stand; M4 × 8 mm for accessory; M4 × 8 mm for stand.
- How long are the screws in LG 47LM6400?
- The records range from 8 to 20 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 LG 47LM6400?
- 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.