Belmont Eurus S6 Dental Unit screw size
M4 / M5 · 20 mm long
Our records put Belmont Eurus S6 Dental Unit on M4 and M5 screws, 20 mm long.
There are 2 separate fitment records for it, including pan head screw (3P) for doctor unit base mount installation (M4) and pan head screw (2P) for unit assembly (M5).
Head and drive, as the sources state them: pan head.
2 of the 2 records are marked confirmed, drawn from 1 source (manualslib.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.
Belmont Eurus S6 Dental Unit 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 | Pan head | not stated | Pan head screw (3P) for doctor unit base mount installation | Confirmed |
| M5 | not stated | 0.8 mm | Pan head | not stated | Pan head screw (2P) for unit assembly | Confirmed |
Fitment records and sources
Pan head screw (3P) for doctor unit base mount installation
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
Pan head screw (2P) for unit assembly
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
How to check the screw before you buy
- Keep material and finish the same as the original (often stainless) on equipment that is cleaned or sterilised.
- Diameter: across the threads an M4 screw measures about 4 mm with calipers (usually a hair under). This device also uses M5, so measure each screw rather than assuming they match.
- 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 record states 20 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 / M5
- US-made pinball machines (Williams/Bally/Stern) overwhelmingly use imperial UTS threads (#6-32, #8-32, #10-32); explicit metric threads only appear on newer/import components such as Jersey Jack Pinball's Hobbit Smaug assembly (M3).
- M4 and 6-32 UNC share a nominal diameter with different pitch — a classic cross-thread in US-market kits.
- M5x0.8 is the de facto universal bike thread — confirm 0.8mm pitch before threading into carbon or alloy bosses.
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 Medical & Laboratory
The same screw also fits
Devices whose records share a thread with Belmont Eurus S6 Dental Unit, closest length match first.
- Prosthetic pyramid adapter also M4 × 20 mm
- LG 42LM6400 also M4 × 20 mm
- Rexel S16 paper shredder also M4 × 20 mm
- Monitor arms (Ergotron LX and generic) also M4 × 20 mm
- GCX barcode scanner adapter base plate also M4 × 20 mm
- LG 65LW6500 also M4 × 20 mm
- Power tool battery pack shell also M4 × 20 mm
- Makeblock mBot Neo/mBot2 assembly kit also M4 × 20 mm
Questions about Belmont Eurus S6 Dental Unit screws
- What size screw does Belmont Eurus S6 Dental Unit use?
- M4 × 20 mm for pan head screw (3P) for doctor unit base mount installation; M5 for pan head screw (2P) for unit assembly.
- How long are the screws in Belmont Eurus S6 Dental Unit?
- The record gives 20 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 Belmont Eurus S6 Dental Unit?
- 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.