# NSN 4730-01-550-6121: Coupling Half, Quick Disconnect

NSN 4730-01-550-6121 (also written 4730015506121; NIIN 01-550-6121) is a coupling half, quick disconnect in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. 4 manufacturer part numbers from 4 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 4730-01-550-6121 (4730015506121)
- NIIN: 01-550-6121 (015506121)
- 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 R: the government owns neither the data nor the rights, and obtaining them is judged uneconomical. (observed 2026-10-23)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| STYL | STYLE DESIGNATOR | — |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | COUPLER, MALE |
| FEAT | SPECIAL FEATURES | QTY OF 2 |
| AGAV | END ITEM IDENTIFICATION | AXLE COOLER |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| AT181186 | 75160 | DEERE & CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AT181186 | Z0944 | HITACHI CONSTRUCTION MACHINERY AUST AUSTRALIA PTY LTD HITACHI CONSTRUCTION MACHINERY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AT181186 | Z14G0 | RDO EQUIPMENT PTY LTD | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AT181186 | ZB955 | RDO EQUIPMENT RDO EQUIPMENT PTY LTD | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-15 | [SPE7LX22D0068/SPE7L126FARX3](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730015506121) | COUPLING HALF, QUICK DISCONNECT | RDO AGRICULTURE EQUIPMENT CO | $332.64 |
| 2026-09-02 | [SPE7LX22D0068/SPE7L126FAMN4](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730015506121) | COUPLING HALF, QUICK DISCONNECT | RDO AGRICULTURE EQUIPMENT CO | $55.44 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4730015506121&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730015506121
- 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/4730-01-550-6121/
JSON: https://nsnexplorer.com/api/nsn/4730-01-550-6121.json