VSQ0051-1 Threaded Coaxial Connector, Made in Japan, Factory Sealed
- 3 photos
Never used and never opened. Still in the factory tube, tray, reel or bag it shipped in, with the original date code intact.
New old stock, sealed on the grading scaleSend the quantity you need. You get a quote back with shipping before anything is charged.
Video
Filmed on the bench. Sound is stripped from product clips.
- 0:11
Specifications
| Specification | Value |
|---|---|
| Identification | |
| Part number | VSQ0051-1 |
| Manufacturer | Not recorded |
| Condition | New old stock, sealed |
| Date code | Not recorded |
| Package | Machined metal coaxial connector, threaded coupling, in a sealed factory bag |
| Country of origin | Japan |
| Family | Not recorded |
| Stock number | SC7KR8YT |
| Overview | |
| Type | Coaxial connector, threaded coupling |
| Part number on the bag | VSQ0051-1 |
| Not a bayonet type | The coupling is threaded, so it is not a BNC |
| Related listing | The same connector is also listed loose and unsealed at a lower price |
| Not established | |
| Connector series | Not identified. VSQ0051-1 is a house number, not an industry designation |
| Coupling thread size | Not measured. This is the field that identifies the series |
| Impedance | Not established. Not marked on the connector or the bag |
| Manufacturer | Not identified. The bag carries a part number and a country, no maker's name |
| Physical | |
| Coupling | Threaded, with a hexagonal flat for a spanner |
| Centre contact | Single centre contact carried in a dielectric bead |
| Body | Machined metal, stepped barrel behind the coupling |
| Provenance | |
| Country of origin | Japan, printed on the bag |
| Packaging | Original factory bag, sealed and never opened |
| Condition | New old stock, sealed. Mating surfaces never handled |
| Quantity offered | One piece, in its sealed bag |
| Basis of identification | The printed bag and the visible construction. No series is claimed |
About this part
A small machined coaxial connector still sealed in its factory bag, the bag printed VSQ0051-1 and MADE IN JAPAN. Never opened.
VSQ0051-1 is a house or customer part number rather than an industry designation, which is worth saying plainly because it is the number you will search and it will not lead anywhere. Nobody catalogues connectors under it. What a buyer actually needs to know is the series, and here the honest answer is that we have not identified it from the photographs and are not going to name one.
What can be described precisely is the hardware. It is a machined metal body with a threaded coupling, a hexagonal flat for a spanner, a stepped barrel behind the coupling and a small centre contact carried in a dielectric bead. Everything about the proportions puts it in the small threaded family rather than among the bayonet types, so it is not a BNC. Beyond that, the reliable way to identify a threaded coaxial connector is to measure the coupling thread, since the major diameter and the pitch separate the series cleanly and unambiguously, and a photograph will not do it.
What the sealed bag buys you is the thing that is genuinely hard to find in a fifty year old connector: the mating surfaces have never been touched. On an RF connector the contact geometry and the plating on the centre pin are the whole part, and they are what handling degrades first.
Questions about this part
What series is this connector?
We do not know, and we would rather say so than pick a plausible name. VSQ0051-1 is a house or customer part number and it is not catalogued anywhere as an industry type. What we can say from the photographs is that the coupling is threaded rather than bayonet, so it is not a BNC, and that the size and proportions place it in the small threaded family. Naming a specific series from a photograph would be a guess, and a wrong series is worse than an honest gap because it will not mate.
How would I identify it myself?
Measure the coupling thread. The major diameter and the pitch separate the threaded coaxial series cleanly and unambiguously, in a way that appearance does not. A thread gauge and a caliper will settle in one minute what a photograph cannot settle at all. Measure the centre contact diameter and the dielectric diameter at the same time and you will have everything you need to match it against a connector table.
What does the sealed bag actually buy me?
The mating surfaces. On an RF connector, the contact geometry and the plating on the centre pin are the working part, and they are exactly what degrades from handling, from being tipped into a drawer with other hardware, and from fingers. A connector that has been in a sealed bag since it was made has pristine plating and an unspread centre contact. That is not a claim you can make about a loose one, however clean it looks.
Should I open it to check it?
That is your call and it depends what you want it for. If you are fitting it, you will open it and the seal has done its job by keeping the surfaces perfect until that moment. If you are keeping it as a period correct spare, the seal is part of what you are buying. We have not opened it, which is why the photographs show the connector through the bag.
Can you tell me the impedance?
No. It is not marked on the connector and not printed on the bag, and impedance cannot be read from the outside of a connector with any reliability. Most small threaded coaxial connectors are 50 ohm, some series exist in both 50 and 75 ohm forms, and the difference is in the dielectric dimensions rather than anything visible. If your application is impedance critical, identify the series first by measurement.
Why is it more expensive than the loose ones?
Because sealed and unhandled is a different product from clean and unhandled looking, and on an RF connector that difference is real rather than cosmetic. The loose ones are listed separately and cheaper, and for most jobs they are perfectly good. This one is for when you want the mating surfaces guaranteed untouched, or when you want the packaging intact.
What condition is it in?
New old stock, factory sealed. The bag has never been opened, the printing on it is fully legible, and the connector inside is visibly clean and bright through the bag. The photographs show the actual sealed item you would receive.