# NSN 1680-01-510-6599: Door, Heat Exchanger

NSN 1680-01-510-6599 (also written 1680015106599; NIIN 01-510-6599) is a door, heat exchanger in Federal Supply Class 1680, Miscellaneous Aircraft Accessories and Components. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 1680-01-510-6599 (1680015106599)
- NIIN: 01-510-6599 (015106599)
- Item name: DOOR,HEAT EXCHANGER
- Federal Supply Class: [FSC 1680 Miscellaneous Aircraft Accessories and Components](https://nsnexplorer.com/fsc/1680/)
- Federal Supply Group: [FSG 16](https://nsnexplorer.com/group/16/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-11-06)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | (INAVY) DOOR,HEAT EXCHANG |
| CRTL | CRITICALITY CODE JUSTIFICATION | AGAV |
| AGAV | END ITEM IDENTIFICATION | FIGHTER AIRCRAFT-FIRST (F18 E/F) |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 74A838452-2001 | 76301 | THE BOEING COMPANY DIV DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 74A838452-2001 | 76823 | NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN IS DIV NORTHROP GRUMMAN AERONAUTICS SYSTEMS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-10 | [SPE4AX24D9408/SPE4AX26F335C](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1680015106599) | DOOR, HEAT EXCHANGER | NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN IS DIV NORTHROP GRUMMAN AERONAUTICS SYSTEMS | $19,405.25 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=1680015106599&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1680015106599
- 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/1680-01-510-6599/
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