Keystone Electronics Snap-in PCB screw terminal (control gear and LED driver terminals) screw size
M4 · 6 mm long
The screws used on Keystone Electronics Snap-in PCB screw terminal (control gear and LED driver terminals) are M4, 6 mm long.
It is listed for datasheet: vertical M4 thread snap-in PCB mount, screw M4 x 6mm.
This entry is marked confirmed and comes from infinity-electron.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.
Keystone Electronics Snap-in PCB screw terminal (control gear and LED driver terminals) 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 mm | 0.7 mm | not stated | not stated | Datasheet: vertical M4 thread snap-in PCB mount, screw M4 x 6mm | Confirmed |
Fitment records and sources
Datasheet: vertical M4 thread snap-in PCB mount, screw M4 x 6mm
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 record states 6 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- 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
- Robot vacuum, air purifier and baby monitor teardowns list screws by driver and length only — length is not a thread size.
- Parts lists that say 'Taptite T-20 screw' are naming the driver, not the thread - only trust the separate M-size callout.
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Devices whose records share a thread with Keystone Electronics Snap-in PCB screw terminal (control gear and LED driver terminals), closest length match first.
- Portable 13-15in travel monitors also M4 × 6 mm
- LED aluminium channel end caps also M4 × 6 mm
- LED video wall cabinet headless bolt E also M4 × 6 mm
- Elo Pay 15.6-inch Tap-to-Pay POS terminal, VESA mount also M4 × 6 mm
- LED video wall cabinet, frame-to-link bracket (SCREW B) also M4 × 6 mm
- GCX 75/100mm VESA flush display mount also M4 × 6 mm
- VESA MIS-B displays (4-7.9 inch) also M4 × 6 mm
- Elo touch display/signage panel (dimensional drawing MS602782) also M4 × 6 mm
Questions about Keystone Electronics Snap-in PCB screw terminal (control gear and LED driver terminals) screws
- What size screw does Keystone Electronics Snap-in PCB screw terminal (control gear and LED driver terminals) use?
- M4 × 6 mm for datasheet: vertical M4 thread snap-in PCB mount, screw M4 x 6mm.
- How long are the screws in Keystone Electronics Snap-in PCB screw terminal (control gear and LED driver terminals)?
- The record gives 6 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- 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 Keystone Electronics Snap-in PCB screw terminal (control gear and LED driver terminals)?
- 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.