Elo EMV bracket flat-head screw (Bag R) screw size
M4 · 6 mm long
Elo EMV bracket flat-head screw (Bag R) takes M4 metric screws, 6 mm long.
The record covers M4X6 flat-head cross-recess.
Head and drive, as the source states them: flat / countersunk head.
This entry is marked confirmed and comes from docs.elotouch.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.
Elo EMV bracket flat-head screw (Bag R) 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 | Flat / countersunk | not stated | M4X6 flat-head cross-recess | Confirmed |
Fitment records and sources
M4X6 flat-head cross-recess
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
How to check the screw before you buy
- Rack and enclosure hardware mixes metric and imperial (#8-32, #10-32, #6-32), so confirm the thread before forcing a screw.
- 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: the source describes a countersunk (flat) head, and those are measured overall, from the top of the head to the tip.
- 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
- M4 and 6-32 UNC share a nominal diameter with different pitch — a classic cross-thread in US-market kits.
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Devices whose records share a thread with Elo EMV bracket flat-head screw (Bag R), closest length match first.
- Wurth Elektronik WA-SSTIE steel spacer stud also M4 × 6 mm
- Soundbar wall brackets also M4 × 6 mm
- Electronics enclosures also M4 × 6 mm
- Crowcon Xgard Bright fixed gas detector (mining/oil & gas field electronics) also M4 × 6 mm
- DIN 41612 backplane / rack card retention also M4 × 6 mm
- cab Applicator A3200 print-and-apply labeling system (packaging line hardware) also M4 × 6 mm
- Telescope finder-scope shoe / base (TS-Optics) also M4 × 6 mm
- DIN 965 / ISO 7046 countersunk Phillips screw also M4 × 6 mm
Questions about Elo EMV bracket flat-head screw (Bag R) screws
- What size screw does Elo EMV bracket flat-head screw (Bag R) use?
- M4 × 6 mm for M4X6 flat-head cross-recess.
- How long are the screws in Elo EMV bracket flat-head screw (Bag R)?
- 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 Elo EMV bracket flat-head screw (Bag R)?
- 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.