# NSN 1660-00-778-6853: Duct Assembly, Air Conditioning-H

NSN 1660-00-778-6853 (also written 1660007786853; NIIN 00-778-6853) is a duct assembly, air conditioning-h in Federal Supply Class 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 1660-00-778-6853 (1660007786853)
- NIIN: 00-778-6853 (007786853)
- Item name: DUCT ASSEMBLY,AIR CONDITIONING-H
- Federal Supply Class: [FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment](https://nsnexplorer.com/fsc/1660/)
- Federal Supply Group: [FSG 16](https://nsnexplorer.com/group/16/)
- 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 |
| --- | --- | --- |
| FEAT | SPECIAL FEATURES | INSULATED |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | FED SPEC SINGLE MATERIAL RESPONSE WW-T-788 |
| CZEK | AIRCRAFT MISSION DESIGN SERIES | B-52 |
| MATT | MATERIAL | ALUMINUM ALLOY |
| AGAV | END ITEM IDENTIFICATION | B-52 AIRCRAFT |
| CZDJ | AIRCRAFT LOCATION | LOWER DECK MAIN SUPPLY DUCT ASSEMBLY |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 25-8763-501 | 81205 | THE BOEING COMPANY DIV DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 25-8763-501 | 82918 | THE BOEING COMPANY DIV LEGACY WICHITA | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-21 | [SPE4A723D5238/SPE4A726F079U](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1660007786853) | DUCT ASSEMBLY, AIR CONDITIONING-HEATING, A | LOBO VENTURES LTD DBA PRECISION MOLD & TOOL-GOVERNMENT DIVISION | $21,624.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=1660007786853&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1660007786853
- 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.

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