Tripod head quick-release plate lock screw size
M2.5 · 8 to 15 mm long
Our records put Tripod head quick-release plate lock on M2.5 screws in lengths from 8 to 15 mm.
The record covers the safety screw locking a plate into a ball head clamp.
This entry is marked reported and comes from naturephotogear.com.
For reference, M2.5 is 2.5 mm across the threads at 0.45 mm pitch. The imperial size people confuse it with: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in.
Tripod head quick-release plate lock 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 |
|---|---|---|---|---|---|---|
| M2.5 | 8–15 mm | 0.45 mm | not stated | not stated | the safety screw locking a plate into a ball head clamp | Reported |
Fitment records and sources
the safety screw locking a plate into a ball head clamp
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
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 M2.5 screw measures about 2.5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.45 mm from one thread crest to the next (22.22 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 records span 8–15 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M2.5 heads take PH1 for Phillips and T8 for Torx, and a 2 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 M2.5 is about 45-70 N·cm into metal threads and 20-35 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2.5
- Projector optics and fan screws often step down to M2.5 while the outer covers use M3 - do not reuse cover screws inside the light engine.
- Nylon-coated M2.5 screws (ThinkPad Edge) are thread-locking; plain replacements work loose over time.
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.
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Browse all 278 in Cameras & Optics →The same screw also fits
Devices whose records share a thread with Tripod head quick-release plate lock, closest length match first.
- Raspberry Pi camera module mounts also M2.5 × 8 mm
- OpenFlexure Delta Stage v1.1.0 motor mounts also M2.5 × 8 mm
- Microscope objective turret also M2.5 × 8 mm
- Camera cages & rigs also M2.5 × 8 mm
- Dell Latitude D800 also M2.5 × 12 mm
- NVG shroud / helmet bracket hardware (Gentex-style 3-hole) also M2.5 × 10–13 mm
- Dell Latitude 3380 also M2.5 × 8.5 mm
- Dell Precision M70 also M2.5 × 8 mm
Questions about Tripod head quick-release plate lock screws
- What size screw does Tripod head quick-release plate lock use?
- M2.5 × 8–15 mm for the safety screw locking a plate into a ball head clamp.
- How long are the screws in Tripod head quick-release plate lock?
- The records range from 8 to 15 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M2.5 screw?
- 0.45 mm (coarse), which is the standard pitch for M2.5 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.05 mm and the normal clearance hole is 2.9 mm.
- What screwdriver do I need for Tripod head quick-release plate lock?
- The sources do not name the drive. For M2.5, Phillips heads normally take PH1 and Torx heads T8; socket heads take a 2 mm hex key.
- Can I use an imperial screw instead of M2.5?
- No. Imperial look-alike: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in. Use a true M2.5 screw so it does not cross-thread or strip the hole.
- Where can I buy replacement screws for Tripod head quick-release plate lock?
- TechSpareWarehouse (our own store) lists M2.5 x 8mm, M2.5 x 10mm and M2.5 x 11mm, which match lengths in the records above.