# NSN 4820-00-956-1426: Seat, Valve

NSN 4820-00-956-1426 (also written 4820009561426; NIIN 00-956-1426) is a seat, valve in Federal Supply Class 4820, Valves, Nonpowered. 6 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 4820-00-956-1426 (4820009561426)
- NIIN: 00-956-1426 (009561426)
- 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 P: the government does not own the rights to the data needed for more sources. (observed 2026-10-23)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABKW | OVERALL HEIGHT | INCHES MINIMUM 0.685 AND INCHES MAXIMUM 0.695 |
| AJSH | SEAL ACCOMMODATION TYPE | GROOVED |
| CQFM | HARDNESS RATING | SEAT ROCKWELL C MINIMUM 34.0 AND ROCKWELL C MAXIMUM 38.0 |
| CQKM | SEATING SURFACE SHAPE | ANGULAR |
| ADAR | BODY OUTSIDE DIAMETER | INCHES MINIMUM 1.339 AND INCHES MAXIMUM 1.400 |
| ADAS | BODY INSIDE DIAMETER | INCHES MINIMUM 1.095 AND INCHES MAXIMUM 1.100 |
| AJSG | SEAT ANGLE IN DEG | NOMINAL 45.000 |
| MATT | MATERIAL | SEAT STEEL COMP 440C |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SEAT FED STD SINGLE MATERIAL RESPONSE QQ-S-763 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 591-606 | 27235 | HARDIE-TYNES CO., INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 591-606 | 9E328 | STEWARD MACHINE CO INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 60-591PC606 | 27235 | HARDIE-TYNES CO., INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 60-591PC606 | 9E328 | STEWARD MACHINE CO INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 60-773PC606 | 27235 | HARDIE-TYNES CO., INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 60-773PC606 | 9E328 | STEWARD MACHINE CO INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-21 | [SPE7MC27P0023](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820009561426) | SEAT, VALVE | STEWARD MACHINE CO INC | $18,384.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820009561426&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820009561426
- 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/4820-00-956-1426/
JSON: https://nsnexplorer.com/api/nsn/4820-00-956-1426.json