# NSN 4820-01-545-7166: Valve, Safety Relief

NSN 4820-01-545-7166 (also written 4820015457166; NIIN 01-545-7166) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 6 manufacturer part numbers from 5 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4820-01-545-7166 (4820015457166)
- NIIN: 01-545-7166 (015457166)
- 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 L: annual buy value is below the screening threshold. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | FIRST END RIGHT-HAND |
| ADQU | FLOW CONTROL DEVICE | POPPET |
| ADSU | DISK LOADING METHOD | SPRING |
| ADSY | VALVE DISCHARGE FLOW RATE | GALLONS PER MINUTE 0.2 |
| AEHZ | MAXIMUM OPERATING TEMP | SINGLE RESPONSE FAHRENHEIT 200.0 |
| AEQJ | MINIMUM OPERATING TEMP | FAHRENHEIT -50.0 |
| AGAV | END ITEM IDENTIFICATION | LARC V |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| AWLS | CONNECTION TYPE | FIRST END THREADED CARTRIDGE |
| CBBL | FEATURES PROVIDED | VALVE STEM LOCK SHIELD |
| CQJX | NOMINAL THREAD SIZE | FIRST END INCHES 0.875 |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 5000.0 |
| CSDC | OPENING PRESSURE SETTING | POUNDS PER SQUARE INCH 1500.0 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | PILOT-OPERATED SPOOL TYPE RELIEF VALVE |
| FEAT | SPECIAL FEATURES | TAMPER RESISTANT CAP; INTERNAL SCREEN; USES D-RING SK10-2 |
| MATT | MATERIAL | OVERALL STEEL |
| MEDA | MEDIA FOR WHICH DESIGNED | SINGLE RESPONSE OIL |
| SFTT | SURFACE TREATMENT | LOCATION NOT OTHERWISE SPECIFIED CHROMATE ZINC |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | LOCATION NOT OTHERWISE SPECIFIED MFR REF SINGLE TREATMENT RESPONSE YELLOW ZINC CHRO-ATE |
| STYL | STYLE DESIGNATOR | — |
| THSD | THREAD SERIES DESIGNATOR | FIRST END UNF |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 12364610-10 | 06085 | BAE SYSTEMS LAND & ARMAMENTS L.P. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 12364610-10 | 076M6 | AMZ ALABAMA INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 12364610-10 | 1CC11 | PARKER-HANNIFIN CORPORATION DIV HYDRAULIC VALVE DIVISION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 12366670 | 06085 | BAE SYSTEMS LAND & ARMAMENTS L.P. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| RAH101T30 | 09990 | PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV HYDRAULIC VALVE DIVISION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| RAH101T30 | 82271 | PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV HYDRAULIC CARTRIDGE SYSTEMS DIVISION | [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=4820015457166&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015457166
- 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/4820-01-545-7166/
JSON: https://nsnexplorer.com/api/nsn/4820-01-545-7166.json