# NSN 4820-01-500-7255: Valve, Safety Relief

NSN 4820-01-500-7255 (also written 4820015007255; NIIN 01-500-7255) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 2 manufacturer part numbers from 1 supplier are on record. No purchases are on record yet.

## Identification

- NSN: 4820-01-500-7255 (4820015007255)
- NIIN: 01-500-7255 (015007255)
- 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 |
| --- | --- | --- |
| AGAV | END ITEM IDENTIFICATION | WINCH ASSEMBLY; BOAT DAVIT, MODEL D6000FCT |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | VALVE,SAFETY RELIEF |
| FEAT | SPECIAL FEATURES | WINCH SYSTEM CONTROLS HYDRAULIC POWER TO THE WINCH FOR EITHER NORMAL HOISTING AND LOWERING, OR CONSTANT TENSION FUNCTIONS; HYDRAULIC POWER IS APPLIED TO EITHER A LOAD OR CONSTANT TENSION HYDRAULIC MOTOR; A COUNTERBALANCE VALVE HYDRAULICALLY LOCKS THE WINCH AND KEEPS THE LOAD FROM DROPPING; A SPRING APPLIED HYDRAULIC RELEASE BRAKE ACTS AS A PARKING BRAKE |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 235622 | 60848 | ALLIED SYSTEMS COMPANY DBA ALLIED SYSTEMS CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MANUAL 1987-1999 FIG7-25 ITEM 3 | 60848 | ALLIED SYSTEMS COMPANY DBA ALLIED SYSTEMS CO | [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=4820015007255&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015007255
- 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/4820-01-500-7255/
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