# NSN 1680-01-629-1390: Filter Maint Aid

NSN 1680-01-629-1390 (also written 1680016291390; NIIN 01-629-1390) is a filter maint aid in Federal Supply Class 1680, Miscellaneous Aircraft Accessories and Components. 1 manufacturer part number from 1 supplier is on record. No purchases are on record yet.

## Identification

- NSN: 1680-01-629-1390 (1680016291390)
- NIIN: 01-629-1390 (016291390)
- Item name: FILTER MAINT AID
- 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 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 | INLET BARRIER FILTER KIT |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | FILTER DELTA P INDICATOR |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 4953103-6 | 55820 | RTX CORPORATION DIV PRATT & WHITNEY | [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=1680016291390&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1680016291390
- 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.

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