# NSN 4730-01-534-4845: Tailpiece, Union

NSN 4730-01-534-4845 (also written 4730015344845; NIIN 01-534-4845) is a tailpiece, union in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Nov 2026.

## Identification

- NSN: 4730-01-534-4845 (4730015344845)
- NIIN: 01-534-4845 (015344845)
- Item name: TAILPIECE,UNION
- 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 G: the government has a complete data package and the rights to use it. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AWZY | END CONNECTION TYPE | BRAZED |
| CGNK | UNION OUTSIDE DIAMETER | INCHES NOMINAL 1.975 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | TAILPIECE ASSEMBLY |
| FEAT | SPECIAL FEATURES | BRONZE TAILPIECE, UNION NUT, RETAINING RING; NITRILE O'RING; O'RING MATERIAL SETS TEMPERATURE AND PRESSURE LIMITS |
| MATT | MATERIAL | COPPER ALLOY |
| ABHP | OVERALL LENGTH | INCHES NOMINAL 1.299 |
| AAGN | NOMINAL PIPE SIZE DESIGNATION | INCHES 1.000 |
| AGAV | END ITEM IDENTIFICATION | SHIP,VALVES |
| BYJF | SEAT TYPE | GASKET |
| AHTC | FLANGE OUTSIDE DIAMETER | INCHES NOMINAL 1.778 |
| ABKU | FLANGE THICKNESS | INCHES NOMINAL 0.180 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 505-7526642ITEMF-22 | 43689 | HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 803-7063850-B531 | 53711 | NAVAL SEA SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-11-04 | $87.55 | 12 | BEC SYSTEMS LLC DBA BEC MACHINE PRODUCTS | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730015344845) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-11-04 | [SPE7M327P0186](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730015344845) | TAILPIECE, UNION | BEC SYSTEMS LLC DBA BEC MACHINE PRODUCTS | $1,050.60 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4730015344845&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730015344845
- 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/4730-01-534-4845/
JSON: https://nsnexplorer.com/api/nsn/4730-01-534-4845.json