Acquisition method (AMC)
1
FSC 4320 × PUMP,ROTARY
PUMP,ROTARY
4320-01-428-1729 FSC 4320
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.
Open for bid
No open solicitations on record for this NSN right now.
Can you win it?
This item is coded as suitable for competitive acquisition (AMC 1).
Suffix (AMSC)
C
Competition
Coded for competition
AMC 1: suitable for competitive acquisition, second or later time. AMSC C: needs engineering source approval; other sources must qualify first. The codes describe the item's status on record, not any one solicitation. What the codes mean
What it is — can you make it?
Dimensions, the FLIS specification requirements, and the manufacturer part numbers already qualified against this NSN.
Specifications
From the federal catalog (DLA FLIS / PUB LOG) — what your part has to meet. Cited specification documents can be looked up in ASSIST Quick Search ↗, DoD's public spec repository — copy the document number in.
| Requirement | Value |
|---|---|
| INTAKE CONNECTION QUANTITY AAYT | 1 |
| INTAKE CONNECTION TYPE AAYU | THREADED INTERNAL |
| DISCHARGE CONNECTION QUANTITY AAYV | 1 |
| DISCHARGE CONNECTION TYPE AAYW | THREADED INTERNAL |
| DRIVE CONNECTION TYPE AAYX | RIGID COUPLED |
| END ITEM IDENTIFICATION AGAV | NAVY WEAPONS SYSTEM TH, STRATEGIC SEALIFT CONVERSION SHIPS CLASS |
| MAXIMUM DISCHARGE FLOW RATE AHYV | GALLONS PER MINUTE 10.0 |
| DISCHARGE PRESSURE AHYW | POUNDS PER SQUARE INCH GAUGE (PSIG) 10.0 |
| OPERATING SPEED AT RATED CAPACITY AHYZ | REVOLUTIONS PER MINUTE 115.0 |
| PUMPING ELEMENT OPERATING POSITION AHZA | HORIZONTAL |
| PUMP ROTATION DIRECTION AHZD | CLOCKWISE |
| ROTARY PUMP DESIGN AHZR | VANE |
| DRIVE SHAFT TYPE AJAB | THREADED AND TONGUE |
| OPERATION METHOD APHE | MANUAL |
| DISCHARGE CONNECTION THREAD SIZE AND SERIES/TYPE DESIGNATOR ASAZ | UN 1.3125-12 |
| INTAKE CONNECTION THREAD SIZE AND SERIES/TYPE DESIGNATOR ASWT | UN 1.3125-12 |
| SPECIAL FEATURES FEAT | DESIGNED FOR DISPENSING FROM 55-GAL DRUMS |
| MEDIA FOR WHICH DESIGNED MEDA | LOCATION NOT OTHERWISE SPECIFIED FUEL/OIL, HYDROCARBON |
| PROPRIETARY CHARACTERISTICS PRPY | PACS |
Manufacturer part numbers
Commercial part numbers cross-referenced to this NSN in the federal catalog — the parts that have been accepted as satisfying this stock number, and who makes them.
| Part number | CAGE | Manufacturer |
|---|---|---|
| 10263 | 07524 | DOVER PUMPS & PROCESS SOLUTIONS SEGMENT INC DBA BLACKMER DIV BLACKMER |
| 7E-3974 | 11083 | CATERPILLAR INC DIV CATERPILLAR DEFENSE |
What it pays — so you can quote
The government's own price and demand record for this NSN — what past awards cleared at, so you know where to land your quote.
Latest unit price
$302.41
Purchases
1
Total spend
$6,955
Sep 24, 2026
Last purchased
2 · 2.0/yr
Purchase records
$13,911
Total demand
$302.41
Latest unit price
Purchase history
Related contract actions
Contract action totals, not unit prices — obligation amounts from USAspending for related awards, shown for context only. These do not appear on the price chart above.
| Action date | Award # | Recipient | Agency | Obligation |
|---|---|---|---|---|
| Sep 24, 2026 | SPE7M126V140M ↗ | — | — | $6,955 |
Demand history
Every solicitation we've indexed for this NSN, open and closed — 1 on record. Closed RFQs (expired, cancelled, or awarded) stay here as a record of past demand; they never get removed.
Who wins this item
Does one supplier win this every time, and are the winners on the listed-source list? One dot per award.
- Award in the last 2 years
- Older award
CAGE 2Y735
last award Sep 2026
CATERPILLAR INC DIV CATERPILLAR DEFENSE
no award yet
no awards on record
Listed source DOVER PUMPS & PROCESS SOLUTIONS SEGMENT INC DBA BLACKMER DIV BLACKMER
no award yet
no awards on record
Listed source CAGE 2Y735 won the only award on record. CAGE 2Y735 won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7M1-26-T-341Z | Sep 11, 2026 | Sep 21, 2026 | 23 | Expired | View at DIBBS → |
Open RFQs on DIBBS → DIBBS award history ↗
About this data
- Unit prices: DLA DIBBS award records — every row links to its government record.
- AMSC: latest observed value from DIBBS solicitation history as of Oct 10, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-10-04.
- Full methodology →
Cite this page
Citation
NSN Explorer. "PUMP,ROTARY." nsnexplorer.com, https://nsnexplorer.com/nsn/4320-01-428-1729/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4320-01-428-1729/