# NSN 4820-00-528-2835: Valve, Safety Relief

NSN 4820-00-528-2835 (also written 4820005282835; NIIN 00-528-2835) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 3 manufacturer part numbers from 3 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 4820-00-528-2835 (4820005282835)
- NIIN: 00-528-2835 (005282835)
- Item name: VALVE,SAFETY RELIEF
- 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 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| STYL | STYLE DESIGNATOR | — |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 975.0 |
| CSDC | OPENING PRESSURE SETTING | POUNDS PER SQUARE INCH 975.0 |
| CWFD | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | ALL ENDS INCHES 0.375 |
| FEAT | SPECIAL FEATURES | REVERSE FLOW |
| MATT | MATERIAL | BODY ALUMINUM ALLOY |
| CQJX | NOMINAL THREAD SIZE | ALL ENDS INCHES 0.562 |
| AAJD | THREAD CLASS | 3B |
| ADSR | BONNET TYPE | INSIDE SCREW |
| THSD | THREAD SERIES DESIGNATOR | ALL ENDS UNF |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| MATT | MATERIAL | STEM STEEL CORROSION RESISTING |
| AAJF | THREAD DIRECTION | ALL ENDS RIGHT-HAND |
| ADQU | FLOW CONTROL DEVICE | DISK |
| AWLS | CONNECTION TYPE | ALL ENDS THREADED INTERNAL BOSS |
| MATT | MATERIAL | FLOW CONTROL DEVICE STEEL CORROSION RESISTING |
| MATT | MATERIAL | SEAT STEEL CORROSION RESISTING |
| ADSU | DISK LOADING METHOD | SPRING |
| ADSY | VALVE DISCHARGE FLOW RATE | GALLONS PER MINUTE 7.0 |
| AEHZ | MAXIMUM OPERATING TEMP | SINGLE RESPONSE FAHRENHEIT 160.0 |
| AHNC | CONNECTION STYLE | — |
| ADST | BONNET ATTACHMENT METHOD | INTEGRAL |
| MEDA | MEDIA FOR WHICH DESIGNED | SINGLE RESPONSE FUEL/OIL, HYDROCARBON |
| CBBL | FEATURES PROVIDED | PRESSURE TIGHT OUTLET SIDE |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 10-3000-14 | 81205 | THE BOEING COMPANY DIV DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| A50070Z6 | 81982 | HYDRO-AIRE AEROSPACE CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| M9029DCD002 | 6L817 | NATIONAL MACHINE COMPANY DBA NMG AEROSPACE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-23 | [SPE7M026V5766](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820005282835) | VALVE, SAFETY RELIEF | — | $85,300.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820005282835&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820005282835
- 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/4820-00-528-2835/
JSON: https://nsnexplorer.com/api/nsn/4820-00-528-2835.json