# NSN 4820-01-390-4539: Valve, Check

NSN 4820-01-390-4539 (also written 4820013904539; NIIN 01-390-4539) is a valve, check in Federal Supply Class 4820, Valves, Nonpowered. 1 manufacturer part number from 1 supplier is on record. No purchases are on record yet.

## Identification

- NSN: 4820-01-390-4539 (4820013904539)
- NIIN: 01-390-4539 (013904539)
- Item name: VALVE,CHECK
- 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 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 |
| --- | --- | --- |
| AKGG | NOMINAL LENGTH | ALL ENDS INCHES 1.425 |
| CWCD | NOMINAL OUTSIDE DIAMETER | ALL ENDS INCHES 1.425 |
| MATT | MATERIAL | BODY ALUMINUM ALLOY 2024 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | BODY FED SPEC SINGLE MATERIAL RESPONSE QQ-A-225 TO 6 |
| PRPY | PROPRIETARY CHARACTERISTICS | PACS |
| SFTT | SURFACE TREATMENT | ANODIZE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL SPEC SINGLE TREATMENT RESPONSE -IL-A-8625,TYE 2 CLASS 1 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 49335 | 99643 | EATON AEROSPACE LLC DBA EATON AEROSPACE JACKSON | [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=4820013904539&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820013904539
- 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.

Canonical page: https://nsnexplorer.com/nsn/4820-01-390-4539/
JSON: https://nsnexplorer.com/api/nsn/4820-01-390-4539.json