# NSN 4820-01-365-5583: Valve, Regulating, Oxygen System P

NSN 4820-01-365-5583 (also written 4820013655583; NIIN 01-365-5583) is a valve, regulating, oxygen system p in Federal Supply Class 4820, Valves, Nonpowered. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 4820-01-365-5583 (4820013655583)
- NIIN: 01-365-5583 (013655583)
- Item name: VALVE,REGULATING,OXYGEN SYSTEM P
- Federal Supply Class: [FSC 4820 Valves, Nonpowered](https://nsnexplorer.com/fsc/4820/)
- Federal Supply Group: [FSG 48](https://nsnexplorer.com/group/48/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-20)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AGAV | END ITEM IDENTIFICATION | AIRCRAFT MODELS F-14D,F-18C/D |
| CRTL | CRITICALITY CODE JUSTIFICATION | FEAT |
| FEAT | SPECIAL FEATURES | COMPONENTS INCLUDE 'O' RING 2,RETAINING RING 2,MALE CONNECTOR 1,RDCR BODY,1,RDCR POPPET 1,RDCR RETAINER 1,RDCR PISTON 1,RING LOCK 1,BACK-UP RING 1,STOP 1,FILTER 1,POPPET GUIDE 1,SEAT 1,POPPET SPRING 1;FLIGHT SAFETY CRITICAL |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 10307534 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 361E840-1 | 30941 | EAST/WEST INDUSTRIES, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-16 | [SPE7MC26P3331](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820013655583) | VALVE, REGULATING, OX | EAST/WEST INDUSTRIES, INC. | $90,024.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820013655583&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820013655583
- 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/4820-01-365-5583/
JSON: https://nsnexplorer.com/api/nsn/4820-01-365-5583.json