GCX 75/100mm VESA flush display mount screw size
M4 · 6 to 20 mm long
If you are replacing a screw on GCX 75/100mm VESA flush display mount, the thread is M4 in lengths from 6 to 20 mm.
The record covers M4 pan head machine screws supplied in 6, 8, 10, 12, 16 and 20mm; needs 4 full turns of engagement.
Head and drive, as the source states them: pan head.
This entry is marked confirmed and comes from gcx.com.
An M4 screw is 4 mm in diameter with a 0.7 mm pitch, tapped with a 3.3 mm drill; imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.
GCX 75/100mm VESA flush display mount 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 | 6–20 mm | 0.7 mm | Pan head | not stated | M4 pan head machine screws supplied in 6, 8, 10, 12, 16 and 20mm; needs 4 full turns of engagement | Confirmed |
Fitment records and sources
M4 pan head machine screws supplied in 6, 8, 10, 12, 16 and 20mm; needs 4 full turns of engagement
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: for pan head screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
- The records span 6–20 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
- 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.
- VESA size follows the hole pattern, not the brand: MIS-D uses M4, MIS-E/F uses M6 or M8.
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.
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Devices whose records share a thread with GCX 75/100mm VESA flush display mount, closest length match first.
- VESA MIS-E displays (23-30.9 inch) also M4 × 10 mm
- Elo self-service stand (E796965 / E797162) also M4 × 8 mm
- LG 55LM7600 also M4 × 20 mm
- LG 55LW5700 also M4 × 12 mm
- NEC P474W / P474U / P554W / P554U projector also M4 × 8 mm
- LG 47LW7700 also M4 × 12 mm
- Philips IntelliVue MP80/MP90 monitor also M4 × 8 mm
- LED video wall cabinet top screw F and side screw D also M4 × 8–12 mm
Questions about GCX 75/100mm VESA flush display mount screws
- What size screw does GCX 75/100mm VESA flush display mount use?
- M4 × 6–20 mm for M4 pan head machine screws supplied in 6, 8, 10, 12, 16 and 20mm; needs 4 full turns of engagement.
- How long are the screws in GCX 75/100mm VESA flush display mount?
- The records range from 6 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 GCX 75/100mm VESA flush display mount?
- 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.