# NSN 4820-01-493-7963: Seat, Valve

NSN 4820-01-493-7963 (also written 4820014937963; NIIN 01-493-7963) is a seat, valve in Federal Supply Class 4820, Valves, Nonpowered. 4 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4820-01-493-7963 (4820014937963)
- NIIN: 01-493-7963 (014937963)
- Item name: SEAT,VALVE
- 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 2026-10-23)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ADAR | BODY OUTSIDE DIAMETER | INCHES NOMINAL 11.905 |
| ADAS | BODY INSIDE DIAMETER | INCHES NOMINAL 10.375 |
| AGAV | END ITEM IDENTIFICATION | 4820-01-491-1347 VALVE, SAFETY RELIEF P/N 6937523 ASSEMBLY 100. W/S SEAWOLF CLASS SSN |
| AJSH | SEAL ACCOMMODATION TYPE | GROOVED |
| CQKM | SEATING SURFACE SHAPE | RADIAL |
| FEAT | SPECIAL FEATURES | USED ON MOTOR, TLTA S. MADE FROM 1-3/8 INCH THICK SHEET. HAS 9 GROOVES 1/32 R LOCATED RADIALLY EQUALLY SPACED AND MACHINED ON BOTH SURFACES |
| MATT | MATERIAL | SEAT PLASTIC POLYAMIDE NYLON |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SEAT ASSN STD SINGLE MATERIAL RESPONSE L--410 TY 6 TO 6 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 6937523 | 53711 | NAVAL SEA SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6937523 ITEM 81 | 53711 | NAVAL SEA SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| L-P-410 TYPE 6/ | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| L-P-410 TYPE 6/6 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | [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=4820014937963&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820014937963
- 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/4820-01-493-7963/
JSON: https://nsnexplorer.com/api/nsn/4820-01-493-7963.json