The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-423-5108, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
4320-01-423-5108
Item Name
Impeller,pump,centrifugal
FSC / FSG
4320 / 43 — Power and Hand Pumps
Status
ACTIVE
Keyway Type
SQUARE
Design Type
DOUBLE WIDTH
Overall Diameter
13.750 INCHES NOMINAL IN
Mounting Method
KEY
Keyway Quantity
1
Blade Quantity
8
Hub Quantity
2
Keyway Width
0.625 INCHES NOMINAL IN
Material
COPPER ALLOY
Rotation Direction for Which Designed
CLOCKWISE
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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4320-01-423-51302-0189-01POSSIBLE MATCH
HOUSING,LIQUID PUMP
Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps
4320-01-423-56798-0206-01POSSIBLE MATCH
SLEEVE,SHAFT,PUMP
Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps
4320-01-423-56829-0567-01POSSIBLE MATCH
RING,WEARING
Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps
4320-01-423-5691NA1797POSSIBLE MATCH
PUMP UNIT,CENTRIFUGAL
Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps
4320-01-423-5695231-31-1520POSSIBLE MATCH
DEFLECTOR,DIRT AND LIQUID
Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
PL.6VHSL-1 ITEM 3
5/2Secondary reference
U.S. Government activity
NF16203
D/9Drawing number reference only
U.S. Government activity
NA1797
D/9Drawing number reference only
U.S. Government activity
3-0443-01
3/2Design control — primary reference
U.S. Government activity
Related Parts
4320-01-423-5130POSSIBLE MATCH
HOUSING,LIQUID PUMP
2-0189-01
4320-01-423-5679POSSIBLE MATCH
SLEEVE,SHAFT,PUMP
8-0206-01
4320-01-423-5682POSSIBLE MATCH
RING,WEARING
9-0567-01
4320-01-423-5691POSSIBLE MATCH
PUMP UNIT,CENTRIFUGAL
NA1797
4320-01-423-5695POSSIBLE MATCH
DEFLECTOR,DIRT AND LIQUID
231-31-1520
Frequently Asked Questions
What is NSN 4320-01-423-5108?
NSN 4320-01-423-5108 is a Impeller,pump,centrifugal, classified under FSC 4320, Power and Hand Pumps. Status: active.
What NSN replaces 4320-01-423-5108?
5 possible matches (shared part number, not a government interchangeability claim): 4320-01-423-5130, 4320-01-423-5679, 4320-01-423-5682. Verify interchangeability with system specifications before substitution.
What are the specifications of 4320-01-423-5108?
Key specifications for 4320-01-423-5108: Keyway Type: SQUARE; Design Type: DOUBLE WIDTH; Overall Diameter: 13.750 INCHES NOMINAL IN; Mounting Method: KEY. 10 specifications are documented in the U.S. Government catalog.
Is NSN 4320-01-423-5108 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.