# NSN 4730-01-643-0645: Coupling Half, Quick Disconnect

NSN 4730-01-643-0645 (also written 4730016430645; NIIN 01-643-0645) is a coupling half, quick disconnect in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. 1 manufacturer part number from 1 supplier is on record. It was last purchased in Sep 2026.

## Identification

- NSN: 4730-01-643-0645 (4730016430645)
- NIIN: 01-643-0645 (016430645)
- Item name: COUPLING HALF,QUICK DISCONNECT
- Federal Supply Class: [FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings](https://nsnexplorer.com/fsc/4730/)
- Federal Supply Group: [FSG 47](https://nsnexplorer.com/group/47/)
- Acquisition method suffix code: AMSC D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-10-27)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 500.0 |
| ABHP | OVERALL LENGTH | INCHES NOMINAL 2.984 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 5500BVSL143 | 73992 | TUTHILL CORP HANSEN COUPLING DIV | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-03 | [SPE7M326V3427](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730016430645) | COUPLING HALF, QUICK | ECHELON SUPPLY AND SERVICE, INC. | $2,986.64 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4730016430645&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730016430645
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/4730-01-643-0645/
JSON: https://nsnexplorer.com/api/nsn/4730-01-643-0645.json