EchoMaster PCAM-JP3 spare-tire mount camera screw size
M3 / M6 · length not stated in the sources
EchoMaster PCAM-JP3 spare-tire mount camera takes M3 and M6 metric screws. None of the sources we found gives an exact length, so measure the original before you order.
There are 2 separate fitment records for it, including camera body to mounting plate (2, with lock washers) (M3) and mounting plate to spare tire carrier (M6).
2 of the 2 records are marked confirmed, drawn from 1 source (EchoMaster PCAM-JP3 Installation Guide).
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.
EchoMaster PCAM-JP3 spare-tire mount camera 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 | not stated | not stated | camera body to mounting plate (2, with lock washers)washer / flange face | Confirmed |
| M6 | not stated | 1 mm | not stated | not stated | mounting plate to spare tire carrier | Confirmed |
Fitment records and sources
camera body to mounting plate (2, with lock washers)
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
mounting plate to spare tire carrier
pitch 1 mm · tap 5 mm · clearance 6.6 mm · PH3 / Torx T30
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). This device also uses M6, 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.
- 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.
- 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 / M6
- Camera tripod and Arca threads are imperial 1/4-20 and 3/8-16, never M3.
- GoPro's own official Dive Housing user guide does not itself state a metric screw size for the housing body; only third-party accessory manufacturer (INON) manuals explicitly cite M6 screws for their add-on arms/adapters attaching to the housing.
- Camera tripods use imperial 1/4-20, which looks like M6 but is a different pitch — forcing one strips the socket.
- 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 Cameras & Optics
The same screw also fits
Devices whose records share a thread with EchoMaster PCAM-JP3 spare-tire mount camera, closest length match first.
- i-PRO / Panasonic WV-QWL100 camera mount bracket also M3
- Newport M-SP-2 optical post also M6
- Wimberley AP-640 replacement lens foot also M3
- Wimberley Arca-Swiss replacement feet (AP-500/600 series) also M3
- Panasonic WV-NF5C outdoor camera housing also M3
- Optical breadboard / optical table (metric) also M6
- Olympus BH-2 microscope frame also M3
- Aimpoint Micro T-1/T-2/H-1/H-2 standard mount screw also M3
Questions about EchoMaster PCAM-JP3 spare-tire mount camera screws
- What size screw does EchoMaster PCAM-JP3 spare-tire mount camera use?
- M3 for camera body to mounting plate (2, with lock washers); M6 for mounting plate to spare tire carrier.
- How long are the screws in EchoMaster PCAM-JP3 spare-tire mount camera?
- 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 EchoMaster PCAM-JP3 spare-tire mount camera?
- 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.