Vitali T5 dental unit screw size
M4 / M5 / M6 · length not stated in the sources
The screws used on Vitali T5 dental unit are M4, M5 and M6. None of the sources we found gives an exact length, so measure the original before you order.
There are 3 separate fitment records for it, including service manual: M4 grounding screw and M4 stop screw in the headrest, two M4 screws holdin (M4), protection guard fits on the bracket with two M5 screws (M5) and closing guard fastens to the seat guard with the supplied countersunk M6 screws (M6).
Head and drive, as the sources state them: flat / countersunk head.
3 of the 3 records are marked confirmed, drawn from 1 source (frankshospitalworkshop.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.
Vitali T5 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 | not stated | 0.7 mm | not stated | not stated | Service manual: M4 grounding screw and M4 stop screw in the headrest, two M4 screws holding the housing to the seat housing, two M4 on the front seat housing and two on the lower parallelogram housing | Confirmed |
| M5 | not stated | 0.8 mm | not stated | not stated | Protection guard fits on the bracket with two M5 screws | Confirmed |
| M6 | not stated | 1 mm | Flat / countersunk | not stated | Closing guard fastens to the seat guard with the supplied countersunk M6 screws | Confirmed |
Fitment records and sources
Service manual: M4 grounding screw and M4 stop screw in the headrest, two M4 screws holding the housing to the seat housing, two M4 on the front seat housing and two on the lower parallelogram housing
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
Protection guard fits on the bracket with two M5 screws
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
Closing guard fastens to the seat guard with the supplied countersunk M6 screws
pitch 1 mm · tap 5 mm · clearance 6.6 mm · PH3 / Torx T30
How to check the screw before you buy
- For medical and lab equipment, use the manufacturer's replacement part where one is specified; the thread size here helps identify it, not certify it.
- Diameter: across the threads an M4 screw measures about 4 mm with calipers (usually a hair under). This device also uses M5 / M6, 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: the source describes a countersunk (flat) head, and those are measured overall, from the top of the head to the tip.
- 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 / M6
- JCM bill-acceptor manual warns that if the host cabinet mounting bracket is only 2mm thick, standard-length M4 screws will not seat correctly — screw length must be matched to bracket thickness.
- M5x0.8 is the de facto universal bike thread — confirm 0.8mm pitch before threading into carbon or alloy bosses.
- TS-Optics Losmandy-style dovetail bars drill through-holes sized to accept either M6 metric screws or 1/4" imperial screws interchangeably in the same countersunk holes.
More in Medical & Laboratory
The same screw also fits
Devices whose records share a thread with Vitali T5 dental unit, closest length match first.
- Belmont Eurus S6 Dental Unit also M4
- Hitachi SEM sample stubs also M4
- HERMLE Z 327 K laboratory centrifuge also M4
- Thorlabs PT3/M XYZ translation stage also M6
- Ottobock 17AD1 ankle joint screw (standard plastic) also M5
- Ottobock 17AD1 ankle joint screw (M6) also M6
- Midmark M9/M11 Sterilizer also M4
- Mocom Dental Autoclaves also M6
Questions about Vitali T5 dental unit screws
- What size screw does Vitali T5 dental unit use?
- M4 for service manual: M4 grounding screw and M4 stop screw in the headrest, two M4 screws holding the housing to the seat housing, two M4 on the front seat housing and two on the lower parallelogram housing; M5 for protection guard fits on the bracket with two M5 screws; M6 for closing guard fastens to the seat guard with the supplied countersunk M6 screws.
- How long are the screws in Vitali T5 dental unit?
- None of the sources states a length. Remove one screw and measure it from under the head to the tip (overall for a countersunk head).
- 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 Vitali T5 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.