# NSN 4730-01-274-0807: Expansion Joint, Pipe

NSN 4730-01-274-0807 (also written 4730012740807; NIIN 01-274-0807) is an expansion joint, pipe in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. 5 manufacturer part numbers from 5 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4730-01-274-0807 (4730012740807)
- NIIN: 01-274-0807 (012740807)
- Item name: EXPANSION JOINT,PIPE
- 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 B: must be bought from the sources named on a source control or selected item drawing. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAGN | NOMINAL PIPE SIZE DESIGNATION | INCHES 3.000 |
| ABHP | OVERALL LENGTH | INCHES NOMINAL 5.125 |
| ABKG | BOLT CIRCLE DIAMETER | INCHES NOMINAL 6.000 |
| AECS | BOLT HOLE QUANTITY | 4 |
| AHTC | FLANGE OUTSIDE DIAMETER | INCHES NOMINAL 7.500 |
| AJYP | SCREW THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| AWZY | END CONNECTION TYPE | FLANGED |
| CFQK | WORKING PRESSURE RATING | POUNDS PER SQUARE INCH (PSI) NOMINAL 225.0 |
| CRTL | CRITICALITY CODE JUSTIFICATION | FEAT |
| FEAT | SPECIAL FEATURES | WEAPON SYSTEM ESSENTIAL |
| MATT | MATERIAL | FLANGE STEEL |
| SFTT | SURFACE TREATMENT | FLANGE CADMIUM |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 3258421-1 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3258421-1 | 53711 | NAVAL SEA SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 800-USA-1 | 4BNK0 | UNAFLEX, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 800-USA-1 | 56033 | UNAFLEX INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| METRASPHERE 3IN-OUN | 54819 | METRAFLEX COMPANY THE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4730012740807&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730012740807
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- 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/4730-01-274-0807/
JSON: https://nsnexplorer.com/api/nsn/4730-01-274-0807.json