# NSN 1650-00-171-3406: Stem And Seat Assembly

NSN 1650-00-171-3406 (also written 1650001713406; NIIN 00-171-3406) is a stem and seat assembly in Federal Supply Class 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. 1 manufacturer part number from 1 supplier is on record. No purchases are on record yet.

## Identification

- NSN: 1650-00-171-3406 (1650001713406)
- NIIN: 00-171-3406 (001713406)
- Item name: STEM AND SEAT ASSEMBLY
- Federal Supply Class: [FSC 1650 Aircraft Hydraulic, Vacuum, and De-icing System Components](https://nsnexplorer.com/fsc/1650/)
- 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 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| TEXT | GENERAL CHARACTERISTICS ITEM DESCRIPTION | VITON O-RINGS; 0.875 IN. OD; 0.438 IN. ID; DRILLED HOLE THRU SLEEVE END,0.063 IN. DIA,0.100 IN. BY 90 DEG COUNTERSINK |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 21223 | 16780 | EATON AEROSPACE LLC | [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=1650001713406&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1650001713406
- 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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