i-PRO / Panasonic WV-QWL100 camera mount bracket screw size
M3 / M4 · 4 mm long
The screws used on i-PRO / Panasonic WV-QWL100 camera mount bracket are M3 and M4, 4 mm long.
There are 2 separate fitment records for it, including M3 screw used on the camera side of the wall mount bracket assembly (M3) and M4 x 4mm screws (5 supplied, 1 spare) fix mount bracket to upper case; torque 1.56 Nm (M4).
2 of the 2 records are marked confirmed, drawn from 1 source (i-pro.com).
An M3 screw is 3 mm in diameter with a 0.5 mm pitch, tapped with a 2.5 mm drill; imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.
i-PRO / Panasonic WV-QWL100 camera mount bracket screw specifications
One row per fitment record. Head, drive and torque are shown only where the source states them; pitch is the ISO coarse pitch for the thread.
| Thread | Length | Pitch | Head | Drive | Torque | Where it goes | Status |
|---|---|---|---|---|---|---|---|
| M3 | not stated | 0.5 mm | not stated | not stated | not stated | M3 screw used on the camera side of the wall mount bracket assembly | Confirmed |
| M4 | 4 mm | 0.7 mm | not stated | not stated | 1.56 Nm | M4 x 4mm screws (5 supplied, 1 spare) fix mount bracket to upper case; torque 1.56 Nm | Confirmed |
Fitment records and sources
M3 screw used on the camera side of the wall mount bracket assembly
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
M4 x 4mm screws (5 supplied, 1 spare) fix mount bracket to upper case; torque 1.56 Nm
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
How to check the screw before you buy
- Camera and optics hardware often uses short screws into thin threaded plates, so check engagement before tightening fully.
- Diameter: across the threads an M3 screw measures about 3 mm with calipers (usually a hair under). This device also uses M4, so measure each screw rather than assuming they match.
- 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: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- The record states 4 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 M3 heads take PH1 for Phillips and T10 for Torx, and a 2.5 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
Common mix-ups with M3 / M4
- Many gas-detector and sensor manuals only give a torque spec (e.g. '0.5 N·m max') without repeating the thread size at every mention — the explicit M3 callout is usually only in the accessories/spare-parts table, not the main installation steps.
- Only the torque spec is given (1.2 Nm), not shank length or head style — confirm length by direct measurement before ordering replacements.
- Camera rig/cage accessories (SmallRig, Wooden Camera/Metabones) frequently mix M4 structural screws with 1/4-20 and 3/8-16 imperial mounting points on the same product — verify which specific fastener a manual is referencing before ordering replacements.
- Dashcam mounts advertised as '1/4" M4 screw joint' have two different threads: the 1/4"-20 camera thread and a separate M4 grub screw for the ball joint — don't order the wrong one.
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Browse all 278 in Cameras & Optics →The same screw also fits
Devices whose records share a thread with i-PRO / Panasonic WV-QWL100 camera mount bracket, closest length match first.
- Cognex In-Sight 9000 machine vision system also M4 × 4 mm
- Juki MF-7900 industrial coverstitch machine also M4 × 4 mm
- cab XD4T industrial label printer also M4 × 4 mm
- Newport M-SP-2 optical post also M4
- Vivotek IT9360-H / IT9380-H dome camera also M4
- EchoMaster PCAM-JP3 spare-tire mount camera also M3
- OpenFlexure Delta Stage frame also M4
- Edmund Optics metric post kit also M4
Questions about i-PRO / Panasonic WV-QWL100 camera mount bracket screws
- What size screw does i-PRO / Panasonic WV-QWL100 camera mount bracket use?
- M3 for M3 screw used on the camera side of the wall mount bracket assembly; M4 × 4 mm for M4 x 4mm screws (5 supplied, 1 spare) fix mount bracket to upper case; torque 1.56 Nm.
- How long are the screws in i-PRO / Panasonic WV-QWL100 camera mount bracket?
- The record gives 4 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- 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 i-PRO / Panasonic WV-QWL100 camera mount bracket?
- The sources do not name the drive. For M3, Phillips heads normally take PH1 and Torx heads T10; socket heads take 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.
- How tight should the M4 screw on i-PRO / Panasonic WV-QWL100 camera mount bracket be?
- The source gives 1.56 Nm for M4 x 4mm screws (5 supplied, 1 spare) fix mount bracket to upper case; torque 1.56 Nm.