# NSN 4420-01-280-9029: Core Assembly, Fluid Cooler

NSN 4420-01-280-9029 (also written 4420012809029; NIIN 01-280-9029) is a core assembly, fluid cooler in Federal Supply Class 4420, Heat Exchangers and Steam Condensers. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 4420-01-280-9029 (4420012809029)
- NIIN: 01-280-9029 (012809029)
- Item name: CORE ASSEMBLY,FLUID COOLER
- Federal Supply Class: [FSC 4420 Heat Exchangers and Steam Condensers](https://nsnexplorer.com/fsc/4420/)
- Federal Supply Group: [FSG 44](https://nsnexplorer.com/group/44/)
- Acquisition method suffix code: AMSC D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AQRX | TUBING OUTSIDE DIAMETER | LOCATION NOT OTHERWISE SPECIFIED INCHES NOMINAL 0.375 |
| BRXN | HEAT TRANSFER METHOD | INDIRECT |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 4-141-08-048-005 | 51900 | ITT CORPORATION DBA ITT STANDARD | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4-141-08-048-005 | 6LE50 | FLUID HANDLING LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-10 | [SPE8E826P1373](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4420012809029) | CORE ASSEMBLY, FLUID | BROWN HELICOPTER, INC. DBA BROWN HELICOPTER INC | $12,980.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4420012809029&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4420012809029
- 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/4420-01-280-9029/
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