# NSN 4820-01-520-5519: Diaphragm, Actuator Valve, Special

NSN 4820-01-520-5519 (also written 4820015205519; NIIN 01-520-5519) is a diaphragm, actuator valve, special in Federal Supply Class 4820, Valves, Nonpowered. 5 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4820-01-520-5519 (4820015205519)
- NIIN: 01-520-5519 (015205519)
- Item name: DIAPHRAGM,ACTUATOR VALVE,SPECIAL
- 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 G: the government has a complete data package and the rights to use it. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAUB | HOLE DIAMETER | INCHES NOMINAL 0.188 |
| ABHE | OUTSIDE DIAMETER | INCHES NOMINAL 7.500 |
| ABKG | BOLT CIRCLE DIAMETER | INCHES NOMINAL 3.500 |
| ABPX | MATERIAL THICKNESS | INCHES MINIMUM 0.030 AND INCHES MAXIMUM 0.040 |
| ABQA | TAPER MINOR DIAMETER | INCHES NOMINAL 6.000 |
| ABQB | TAPER MAJOR DIAMETER | INCHES NOMINAL 6.500 |
| AECS | BOLT HOLE QUANTITY | 6 |
| AGAV | END ITEM IDENTIFICATION | AN/SLQ-48, VEHICLE, SUBMERSIBLE MINE LOCATOR, (MNS) |
| BGST | PRESSURE RATING | POUNDS PER SQUARE INCH (PSI) NOMINAL 194.0 |
| FEAT | SPECIAL FEATURES | PART NAME ASSIGNED BY CONTROLLING AGENCY IS; DIAPHRAGM, ROLLING SEAL. |
| MATT | MATERIAL | RUBBER |
| MEDA | MEDIA FOR WHICH DESIGNED | HYDRAULIC FLUID |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 3-650-650-FCJ | 01170 | BELLOFRAM CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5266690 | 53711 | NAVAL SEA SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5266690-002 | 53711 | NAVAL SEA SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 7642194 | 53711 | NAVAL SEA SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 7642194-002 | 53711 | NAVAL SEA SYSTEMS COMMAND | [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=4820015205519&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015205519
- 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/4820-01-520-5519/
JSON: https://nsnexplorer.com/api/nsn/4820-01-520-5519.json