# NSN 4820-01-570-4933: Valve, Relief, Pressure And Temper

NSN 4820-01-570-4933 (also written 4820015704933; NIIN 01-570-4933) is a valve, relief, pressure and temper in Federal Supply Class 4820, Valves, Nonpowered. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 4820-01-570-4933 (4820015704933)
- NIIN: 01-570-4933 (015704933)
- Item name: VALVE,RELIEF,PRESSURE AND TEMPER
- 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 2026-10-27)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAQL | BODY STYLE | — |
| ADQU | FLOW CONTROL DEVICE | NEEDLE |
| AGAV | END ITEM IDENTIFICATION | 2320-01-522-1859 TRUCK, DUMP; MRAP - M-ATV |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | PRESSURE RELIEF VALVE |
| FEAT | SPECIAL FEATURES | BODY STYLE: CLOSED; THREAD SIZE: 3/8"; PSI: 175 |
| MATT | MATERIAL | BODY COPPER ALLOY AND STEEL CORROSION RESISTING |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 4183974 | 75Q65 | OSHKOSH DEFENSE LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| N1178EE | 06721 | HALDEX BRAKE PRODUCTS CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-01 | [SPE7MC26V2374](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015704933) | VALVE, RELIEF, PRESSU | GRAND INDUSTRIES INC | $870.06 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820015704933&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015704933
- 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/4820-01-570-4933/
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