Sirona dental handpiece screw size
M2 · 10 mm long
If you are replacing a screw on Sirona dental handpiece, the thread is M2, 10 mm long.
The record covers "SIRONA SCREW M2 X 10" listed as an OEM Sirona spare part.
This entry is marked confirmed and comes from elexadent.com.
An M2 screw is 2 mm in diameter with a 0.4 mm pitch, tapped with a 1.6 mm drill; imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable.
Sirona dental handpiece 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 |
|---|---|---|---|---|---|---|
| M2 | 10 mm | 0.4 mm | not stated | not stated | "SIRONA SCREW M2 X 10" listed as an OEM Sirona spare part | Confirmed |
Fitment records and sources
"SIRONA SCREW M2 X 10" listed as an OEM Sirona spare part
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
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 M2 screw measures about 2 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.4 mm from one thread crest to the next (25 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 10 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 M2 heads take PH0 for Phillips and T6 for Torx, and a 1.5 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 M2 is about 25-40 N·cm into metal threads and 12-20 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2
- M2 (2.00mm, 0.4mm pitch) is NOT the same as #2-56 UNC (2.18mm) — close enough to cross-thread and strip if forced.
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 Sirona dental handpiece, closest length match first.
- Olympus endoscope video head shell insert screw also M2 × 10 mm
- cab XD4T industrial label printer also M2 × 10 mm
- Takara Belmont PRO III 047 dental chair also M2 × 10 mm
- Lenovo ThinkPad T40 also M2 × 10 mm
- Lenovo ThinkPad 760series also M2 × 10 mm
- Lenovo ThinkPad T42 also M2 × 10 mm
- Lenovo ThinkPad T41 also M2 × 10 mm
- Precision instrument hex socket head screws also M2 × 10 mm
Questions about Sirona dental handpiece screws
- What size screw does Sirona dental handpiece use?
- M2 × 10 mm for "SIRONA SCREW M2 X 10" listed as an OEM Sirona spare part.
- How long are the screws in Sirona dental handpiece?
- The record gives 10 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M2 screw?
- 0.4 mm (coarse), which is the standard pitch for M2 machine screws; a 0.25 mm fine pitch exists but is uncommon. The tap drill is 1.6 mm and the normal clearance hole is 2.4 mm.
- What screwdriver do I need for Sirona dental handpiece?
- The sources do not name the drive. For M2, Phillips heads normally take PH0 and Torx heads T6; socket heads take a 1.5 mm hex key.
- Can I use an imperial screw instead of M2?
- No. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable. Use a true M2 screw so it does not cross-thread or strip the hole.