# NSN 4730-01-326-4539: Flange, Pipe

NSN 4730-01-326-4539 (also written 4730013264539; NIIN 01-326-4539) is a flange, pipe in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. 4 manufacturer part numbers from 2 suppliers are on record. The government has 1 open solicitation for it.

## Identification

- NSN: 4730-01-326-4539 (4730013264539)
- NIIN: 01-326-4539 (013264539)
- Item name: FLANGE,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 D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-11-08)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABKG | BOLT CIRCLE DIAMETER | INCHES NOMINAL 6.000 |
| ABKK | FLANGE DIAMETER | INCHES NOMINAL 7.000 |
| ABNM | THICKNESS | INCHES NOMINAL 0.500 |
| ABXP | SOCKET DIAMETER | INCHES MINIMUM 1.315 AND INCHES MAXIMUM 1.318 |
| ABXV | BORE DIAMETER | INCHES NOMINAL 1.172 |
| ACSU | NOMINAL PIPE SIZE FOR WHICH DESIGNED | INCHES 1.000 |
| AECS | BOLT HOLE QUANTITY | 4 |
| AHNX | BOLT HOLE DIAMETER | INCHES NOMINAL 0.375 |
| AJEG | NECK HEIGHT | INCHES NOMINAL 0.625 |
| AJEM | FLANGE SECTION STYLE | — |
| AKWE | FACE SEATING SURFACE CONDITION | MACHINED |
| MATT | MATERIAL | COPPER ALLOY |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | FED SPEC SINGLE MATERIAL RESPONSE QQ-C-390,ALLOY D5,TY 3 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 2621-228-01 | 96169 | ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 2621-228-01 PIECE 179 | 96169 | ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4685790 ITEM 16 | 80064 | NAVAL SHIP SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 510-4685790 ITE | 80064 | NAVAL SHIP SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE7M3-27-Q-0027 | 3 | 2026-11-10 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4730013264539&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4730013264539&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730013264539
- 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/4730-01-326-4539/
JSON: https://nsnexplorer.com/api/nsn/4730-01-326-4539.json