Operating Speed at Rated Capacity: 6000.0 REVOLUTIONS PER MINUTE
Nondefinitive Spec/std Data: 1 CLASS
Stage Quantity: 1
Identification
NSN: 4320-00-021-1351
NIIN: 000211351
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
General Description
The Pump,centrifugal, cataloged under National Stock Number 4320-00-021-1351, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4320-00-021-1351
Item Name
Pump,centrifugal
FSC / FSG
4320 / 43 — Power and Hand Pumps
Status
ACTIVE
Discharge Connection Quantity
1
Drive Connection Type
CLOSE COUPLED
Centrifugal Pump Impeller Quantity
1
Centrifugal Pump Impeller Suction Type
SINGLE
Operating Speed at Rated Capacity
6000.0 REVOLUTIONS PER MINUTE
Nondefinitive Spec/std Data
1 CLASS
Stage Quantity
1
Maximum Discharge Flow Rate
210.0 GALLONS PER MINUTE
Discharge Connection Type
THREADED INTERNAL
Pump Rotation Direction
CLOCKWISE
Centrifugal Pump Design
MIXED FLOW
Total Head
25.000 FEET FT
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4320-00-376-6973POSSIBLE MATCH
PUMP UNIT,CENTRIFUGAL
Possible match (shared part number)
4320-00-724-7011POSSIBLE MATCH
PUMP UNIT,CENTRIFUGAL
Possible match (shared part number)
4320-00-937-6725POSSIBLE MATCH
PUMP UNIT,CENTRIFUGAL
Possible match (shared part number)
5315-01-027-82722516-7POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)Kearflex Engineering Company
4730-01-205-959925167POSSIBLE MATCH
BOLT,FLUID PASSAGE
Possible match (shared part number)Volvo Penta of the Americas Inc
5331-01-561-102425-167POSSIBLE MATCH
O-RING
Possible match (shared part number)Hii Unmanned Systems, Inc
5133-01-659-591825167POSSIBLE MATCH
DRILL,TWIST
Possible match (shared part number)Pferd Milwaukee Brush Co Inc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
MILP556
4/1Identification reference
U.S. Government activity
251-67
3/2Design control — primary reference
U.S. Government activity
Related Parts
4320-00-376-6973POSSIBLE MATCH
PUMP UNIT,CENTRIFUGAL
4320-00-724-7011POSSIBLE MATCH
PUMP UNIT,CENTRIFUGAL
4320-00-937-6725POSSIBLE MATCH
PUMP UNIT,CENTRIFUGAL
5315-01-027-8272POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
2516-7
4730-01-205-9599POSSIBLE MATCH
BOLT,FLUID PASSAGE
25167
5331-01-561-1024POSSIBLE MATCH
O-RING
25-167
5133-01-659-5918POSSIBLE MATCH
DRILL,TWIST
25167
Frequently Asked Questions
What is NSN 4320-00-021-1351?
NSN 4320-00-021-1351 is a Pump,centrifugal, classified under FSC 4320, Power and Hand Pumps. Status: active.
What NSN replaces 4320-00-021-1351?
7 possible matches (shared part number, not a government interchangeability claim): 4320-00-376-6973, 4320-00-724-7011, 4320-00-937-6725. Verify interchangeability with system specifications before substitution.
What are the specifications of 4320-00-021-1351?
Key specifications for 4320-00-021-1351: Discharge Connection Quantity: 1; Drive Connection Type: CLOSE COUPLED; Centrifugal Pump Impeller Quantity: 1; Centrifugal Pump Impeller Suction Type: SINGLE. 12 specifications are documented in the U.S. Government catalog.
Is NSN 4320-00-021-1351 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.