# NSN 1660-01-525-0189: Regulator, Oxygen, Diluter Demand

NSN 1660-01-525-0189 (also written 1660015250189; NIIN 01-525-0189) is a regulator, oxygen, diluter demand in Federal Supply Class 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. 1 manufacturer part number from 1 supplier is on record. It was last purchased in Aug 2026.

## Identification

- NSN: 1660-01-525-0189 (1660015250189)
- NIIN: 01-525-0189 (015250189)
- Item name: REGULATOR,OXYGEN,DILUTER DEMAND
- 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 D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-11-04)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABFY | OVERALL DEPTH | INCHES NOMINAL 2.000 |
| ABKW | OVERALL HEIGHT | INCHES NOMINAL 1.500 |
| ABMK | OVERALL WIDTH | INCHES NOMINAL 1.250 |
| AGAV | END ITEM IDENTIFICATION | F-16 AIRCRAFT; U/O NSN 1660-01-473-3548 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 1652212-1 | 99251 | MISSION SYSTEMS DAVENPORT INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-12 | [SPE7M426P4431](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1660015250189) | REGULATOR, OXYGEN, DI | ECI DEFENSE GROUP, INC. DIV ECI-GA | $252,255.02 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=1660015250189&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1660015250189
- 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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