# NSN 4420-01-323-1813: Core Assembly, Fluid Cooler

NSN 4420-01-323-1813 (also written 4420013231813; NIIN 01-323-1813) is a core assembly, fluid cooler in Federal Supply Class 4420, Heat Exchangers and Steam Condensers. 2 manufacturer part numbers from 1 supplier are on record. No purchases are on record yet.

## Identification

- NSN: 4420-01-323-1813 (4420013231813)
- NIIN: 01-323-1813 (013231813)
- 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 |
| --- | --- | --- |
| AGAV | END ITEM IDENTIFICATION | COOLER,AIR |
| AKMH | CORE DIAMETER | INCHES NOMINAL 12.000 |
| AKMJ | CORE LENGTH | INCHES MINIMUM 81.250 AND INCHES MAXIMUM 81.374 |
| ARNF | TUBE QUANTITY | 32 |
| BRXN | HEAT TRANSFER METHOD | INDIRECT |
| CTRC | EFFECTIVE HEAT TRANSFER SURFACE AREA | SQUARE FEET 123.6 |
| MATT | MATERIAL | TUBES COPPER ALLOY 715 |
| MATT | MATERIAL | TUBE SHEET COPPER ALLOY 715 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | TUBES ASSN STD SINGLE MATERIAL RESPONSE AST- B359-715 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | TUBE SHEET ASSN STD SINGLE MATERIAL RESPONSE AST- B402-715 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| D2641 FIND 2 | 78730 | XCHANGER MANUFACTURING CORPORATION DBA XCHANGER MANUFACTURING CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| D2647 | 78730 | XCHANGER MANUFACTURING CORPORATION DBA XCHANGER MANUFACTURING CORP | [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=4420013231813&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4420013231813
- 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/4420-01-323-1813/
JSON: https://nsnexplorer.com/api/nsn/4420-01-323-1813.json