Evidence guide
M5 circular connector supplier evidence before a swap
An m5 circular connector supplier alternative is acceptable for comparison when coding, pinout, current, voltage and the sealing test describe the same proposed item. A shared thread diameter is a starting question, not proof of interchange.
Checks that stay open until the model file arrives
| Open choice | What to request | Weak substitute |
|---|---|---|
| Coding and key | Letter or key angle on the quoted drawing, plus a photo of that model if the plant offers one | A family photo with the key cropped out |
| Pinout | Contact count, numbering and any unused positions | Matching the outer thread while skipping the pin map |
| Current and voltage | Amperes and volts per contact, with the temperature the rating assumes | A cable ampacity copied from a jacket table |
| Plating | Finish name and thickness if the drawing states microinches or micrometers | The word gold without a thickness |
| Sealing | Ingress protection code, mated or unmated, and the test reference the plant cites | A marketing line about washdown |
| Board or wire end | PCB footprint or wire gauge, including locating pegs and standoff | A shell that fits the panel but misses the pads |
When a same-thread shell is still the wrong part
Buyers sometimes hope a smaller M5 body can replace another M5 body because the coupling nut feels similar. The counter-case is the pin map and the key. If either differs, the alternative stays in an optional column. Mechanical fit of the nut does not move it into the compliant column.
A second dispute is gold flash versus tin on low-current signal contacts. Tin can be appropriate for a stated mating-cycle count and environment. Gold can be requested when the drawing names a thickness. Neither finish is a desk recommendation. Write the drawing value, or write unknown. Connector mating cycle life follows the same rule: copy the figure and the method, or leave the cell blank.
If the M5 shell launches a controlled pair, ask whether impedance and return loss are specified for the mated connector or for the cable. Insertion loss usually belongs to the cable assembly note. Mixing those numbers into the shell price makes two plants impossible to compare. Ingress protection remains a coded test, not a color of the gasket.
A numeric brief for this smaller shell might read 3 contacts or 4 contacts, 1 A, 30 V or 60 V, 100 mating cycles, IP67 mated, and 0.2 µm gold when the drawing says so. Do not copy a 4 A M8 figure onto an M5 contact. Frequency range, gain and VSWR are recorded when the shell is part of an RF jumper. Otherwise leave them out. Measurement accuracy and calibration traceability are the method name and the report date on the plant sheet. New versus refurbished is the same evidence problem at a smaller size: new parts may show a full plating note, refurbished parts need remaining cycle life and condition in writing. An OEM-coded number and a compatible shell are both incomplete until the pin map matches.
Standards language is a question list. A public cabling overview does not prove the M5 part. Ask the plant for the drawing revision and any equipment-authorization or safety file the installation actually requires for that model. This page does not certify compliance.
Decisions to close before the inquiry
Which specification cells are still empty?
List coding, pin count, termination, plating, current, voltage and the wire or board interface. Empty means the plant must propose a value and mark it as a proposal.
What must be true before an alternative is accepted?
The alternative names its manufacturer and model, shows the pin map, and states every deviation. Host compatibility is confirmed by the buyer against the board or the sensor, not by this desk.
How are samples judged?
Define piece count, revision, and the checks you can actually perform: key engagement, pin numbering, plating appearance and a seal check if you have the fixture. A sample that fits the nut can still fail the pin map.
Where does budget sit?
An optional target can be an amount or a range, with currency and a per-piece or whole-order basis. High-end, mid-range, budget or undecided describes the kind of documentation you want to read. It is not a verified rank, and no live quotation is required to state it.
Request a factory quote with the evidence list attached
Write the open cells and the files you need. This call to action matches the evidence guide: the desk coordinates quotations, and the plant supplies the model file.