# NSN 4320-01-428-1729: Pump, Rotary

NSN 4320-01-428-1729 (also written 4320014281729; NIIN 01-428-1729) is a pump, rotary in Federal Supply Class 4320, Power and Hand Pumps. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 4320-01-428-1729 (4320014281729)
- NIIN: 01-428-1729 (014281729)
- Item name: PUMP,ROTARY
- Federal Supply Class: [FSC 4320 Power and Hand Pumps](https://nsnexplorer.com/fsc/4320/)
- Federal Supply Group: [FSG 43](https://nsnexplorer.com/group/43/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAYT | INTAKE CONNECTION QUANTITY | 1 |
| AAYU | INTAKE CONNECTION TYPE | THREADED INTERNAL |
| AAYV | DISCHARGE CONNECTION QUANTITY | 1 |
| AAYW | DISCHARGE CONNECTION TYPE | THREADED INTERNAL |
| AAYX | DRIVE CONNECTION TYPE | RIGID COUPLED |
| AGAV | END ITEM IDENTIFICATION | NAVY WEAPONS SYSTEM TH, STRATEGIC SEALIFT CONVERSION SHIPS CLASS |
| AHYV | MAXIMUM DISCHARGE FLOW RATE | GALLONS PER MINUTE 10.0 |
| AHYW | DISCHARGE PRESSURE | POUNDS PER SQUARE INCH GAUGE (PSIG) 10.0 |
| AHYZ | OPERATING SPEED AT RATED CAPACITY | REVOLUTIONS PER MINUTE 115.0 |
| AHZA | PUMPING ELEMENT OPERATING POSITION | HORIZONTAL |
| AHZD | PUMP ROTATION DIRECTION | CLOCKWISE |
| AHZR | ROTARY PUMP DESIGN | VANE |
| AJAB | DRIVE SHAFT TYPE | THREADED AND TONGUE |
| APHE | OPERATION METHOD | MANUAL |
| ASAZ | DISCHARGE CONNECTION THREAD SIZE AND SERIES/TYPE DESIGNATOR | UN 1.3125-12 |
| ASWT | INTAKE CONNECTION THREAD SIZE AND SERIES/TYPE DESIGNATOR | UN 1.3125-12 |
| FEAT | SPECIAL FEATURES | DESIGNED FOR DISPENSING FROM 55-GAL DRUMS |
| MEDA | MEDIA FOR WHICH DESIGNED | LOCATION NOT OTHERWISE SPECIFIED FUEL/OIL, HYDROCARBON |
| PRPY | PROPRIETARY CHARACTERISTICS | PACS |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 10263 | 07524 | DOVER PUMPS & PROCESS SOLUTIONS SEGMENT INC DBA BLACKMER DIV BLACKMER | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 7E-3974 | 11083 | CATERPILLAR INC DIV CATERPILLAR DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-09-24 | $302.41 | 23 | 2Y735 | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4320014281729) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-24 | [SPE7M126V140M](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4320014281729) | PUMP, ROTARY | — | $6,955.43 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4320014281729&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4320014281729
- 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/4320-01-428-1729/
JSON: https://nsnexplorer.com/api/nsn/4320-01-428-1729.json