TS-Optics Losmandy-style dovetail plate, 200mm length (L-UP7) screw size
M3 · length not stated in the sources
Our records put TS-Optics Losmandy-style dovetail plate, 200mm length (L-UP7) on M3 screws. None of the sources we found gives an exact length, so measure the original before you order.
It is listed for 10x M6 thread bores and countersunk bores; also slotted holes for M6 and 1/4" screws (note: main threads are M6, listed for cross-check).
Head and drive, as the source states them: flat / countersunk head and Slotted drive.
This entry is marked confirmed and comes from teleskop-express.de.
M3 means a 3 mm nominal diameter with a 0.5 mm thread pitch. Imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.
TS-Optics Losmandy-style dovetail plate, 200mm length (L-UP7) 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 |
|---|---|---|---|---|---|---|
| M3 | not stated | 0.5 mm | Flat / countersunk | Slotted | 10x M6 thread bores and countersunk bores; also slotted holes for M6 and 1/4" screws (note: main threads are M6, listed for cross-check) | Confirmed |
Fitment records and sources
10x M6 thread bores and countersunk bores; also slotted holes for M6 and 1/4" screws (note: main threads are M6, listed for cross-check)
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
How to check the screw before you buy
- Do not confuse metric mounting screws with the 1/4-20 or 3/8-16 tripod threads that cameras and clamps also carry.
- Diameter: across the threads an M3 screw measures about 3 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.5 mm from one thread crest to the next (20 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 names a Slotted drive. For comparison, standard M3 heads take PH1 (Phillips) or T10 (Torx), or a 2.5 mm hex key.
- Tightening: no device-specific torque is published in these records. The site's general figure for M3 is about 80-130 N·cm into metal threads and 35-60 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M3
- ISO 14581 Torx countersunk screws look like plain countersunk screws but need the right lobe driver; a Phillips bit will chew the head.
- Eurorack cases mix M3 (most common) and M2.5 rails — check the case brand before buying in bulk.
More in Cameras & Optics
The same screw also fits
Devices whose records share a thread with TS-Optics Losmandy-style dovetail plate, 200mm length (L-UP7), closest length match first.
- Wimberley AP-553 lens foot plate also M3
- SmallRig camera cages and rigs also M3
- 1.25" eyepiece/diagonal/SCT visual back thumb screw also M3
- SIG SAUER ROMEO-RS reflex sight, mounting to SIG P365 pistol optic cut also M3
- Wimberley P-20 Arca-Swiss style tripod lens plate also M3
- Microscope objective turret and stage also M3
- Celestron C11 Schmidt-Cassegrain OTA secondary mirror collimation screws also M3
- Glock MOS adapter plate to slide (Docter/Meopta/Insight/Vortex/Burris footprint) also M3
Questions about TS-Optics Losmandy-style dovetail plate, 200mm length (L-UP7) screws
- What size screw does TS-Optics Losmandy-style dovetail plate, 200mm length (L-UP7) use?
- M3 for 10x M6 thread bores and countersunk bores; also slotted holes for M6 and 1/4" screws (note: main threads are M6, listed for cross-check).
- How long are the screws in TS-Optics Losmandy-style dovetail plate, 200mm length (L-UP7)?
- 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 M3 screw?
- 0.5 mm (coarse), which is the standard pitch for M3 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.5 mm and the normal clearance hole is 3.4 mm.
- What screwdriver do I need for TS-Optics Losmandy-style dovetail plate, 200mm length (L-UP7)?
- The source lists a Slotted drive. Standard M3 heads otherwise take PH1 (Phillips) or T10 (Torx), or a 2.5 mm hex key.
- Can I use an imperial screw instead of M3?
- No. Imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3. Use a true M3 screw so it does not cross-thread or strip the hole.