# NSN 4820-01-442-8532: Piston, Valve

NSN 4820-01-442-8532 (also written 4820014428532; NIIN 01-442-8532) is a piston, valve in Federal Supply Class 4820, Valves, Nonpowered. 2 manufacturer part numbers from 1 supplier are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 4820-01-442-8532 (4820014428532)
- NIIN: 01-442-8532 (014428532)
- Item name: PISTON,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 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AARX | INSIDE DIAMETER | INCHES NOMINAL 0.656 |
| ABHE | OUTSIDE DIAMETER | INCHES NOMINAL 1.094 |
| ABHP | OVERALL LENGTH | INCHES NOMINAL 0.706 |
| AGAV | END ITEM IDENTIFICATION | 3805-01-431-1165; SHIP, OHIO CLASS SSN (TRIDENT) |
| BTNZ | VALVE TYPE FOR WHICH DESIGNED | VALVE EQUALIZING |
| CBBL | FEATURES PROVIDED | THREADED |
| CXBX | VALVE SIZE FOR WHICH DESIGNED | INCHES 0.500 |
| CYDX | VALVE DESIGN CONTROL ACTIVITY | 23798 |
| CYDY | VALVE MODEL NUMBER FOR WHICH DESIGNED | E-1 |
| MATT | MATERIAL | COPPER ALLOY |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASSN STD SINGLE MATERIAL RESPONSE AST- B144 ALLOY 3B |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| BMC3479 | 23798 | BIDORO MFG CO PO BOX 103 HUNTINGTON STA NY 11746 | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| BMC3479 PART 12 | 23798 | BIDORO MFG CO PO BOX 103 HUNTINGTON STA NY 11746 | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-10-13 | $38.00 | 60 | CTN MACHINING LLC | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820014428532) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-13 | [SPE7M427P0233](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820014428532) | PISTON, VALVE | — | $2,280.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820014428532&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820014428532
- 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/4820-01-442-8532/
JSON: https://nsnexplorer.com/api/nsn/4820-01-442-8532.json