# NSN 4730-01-121-2750: Nut, Union

NSN 4730-01-121-2750 (also written 4730011212750; NIIN 01-121-2750) is a nut, union in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. 4 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 4730-01-121-2750 (4730011212750)
- NIIN: 01-121-2750 (011212750)
- Item name: NUT,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 |
| --- | --- | --- |
| AAJD | THREAD CLASS | 2B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| ABNK | SHOULDER WIDTH | INCHES NOMINAL 0.300 |
| ACTA | NUT STYLE | — |
| ACTD | NUT DIAMETER | INCHES NOMINAL 3.500 |
| ADEA | NUT HEIGHT | INCHES NOMINAL 1.500 |
| BSPX | SMALLEST INSIDE DIAMETER | INCHES NOMINAL 2.650 |
| BZRR | THREAD SERIES | UN |
| CFQB | SHOULDER STEP WIDTH | INCHES NOMINAL 0.385 |
| CFQC | SHOULDER SEAT DIAMETER | INCHES NOMINAL 2.660 |
| CMLP | THREAD QUANTITY PER INCH | 12 |
| CQJX | NOMINAL THREAD SIZE | INCHES 3.062 |
| FEAT | SPECIAL FEATURES | 8 RIBS EQUALLY SPACED ON OUTSIDE DIA |
| MATT | MATERIAL | OVERALL COPPER ALLOY |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC SINGLE MATERIAL RESPONSE -IL-C-20159,TYE I |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 2621-713-01 | 96169 | ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 2621-713-01 PC2 | 71905 | DERBYSHIRE MACHINE & TOOL CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 2621-713-01 PIECE 20 | 96169 | ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 2621-713-01PC20 | 71905 | DERBYSHIRE MACHINE & TOOL CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-10-06 | $521.35 | 5 | BEC SYSTEMS LLC DBA BEC MACHINE PRODUCTS | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730011212750) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-06 | [SPE7M427V0134](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730011212750) | NUT, UNION | BEC SYSTEMS LLC DBA BEC MACHINE PRODUCTS | $2,606.75 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4730011212750&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730011212750
- 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/4730-01-121-2750/
JSON: https://nsnexplorer.com/api/nsn/4730-01-121-2750.json