FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors
Government record, cited
Also searched as4320-01-341-7590 ·
4320013417590 ·
NIIN 013417590 ·
01-341-7590 ·
FSC 4320 Power and Hand Pumps · CA11328-4 · CA11741 · CA11741 PIECE 4
The Ring,wearing, cataloged under National Stock Number 4320-01-341-7590, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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
4320-01-341-7590
Item Name
Ring,wearing
FSC / FSG
4320 / 43 — Power and Hand Pumps
Status
ACTIVE
Material
COPPER ALLOY
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 Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4320-01-341-7591CA11328-4APOSSIBLE MATCH
RING,WEARING
Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps
4320-01-341-7592CA11328-10POSSIBLE MATCH
RING,WEARING
Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps
4320-01-341-7616CA11741-60POSSIBLE MATCH
CONNECTOR,FLUID,PUMP
Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps
4320-01-342-2484CA11328-3-9.750INPOSSIBLE MATCH
IMPELLER,PUMP,CENTRIFUGAL
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
CA11328-4
3/2Design control — primary reference
U.S. Government activity
CA11741
D/9Drawing number reference only
U.S. Government activity
CA11741 PIECE 4
5/2Secondary reference
U.S. Government activity
Related Parts
4320-01-341-7591POSSIBLE MATCH
RING,WEARING
CA11328-4A
4320-01-341-7592POSSIBLE MATCH
RING,WEARING
CA11328-10
4320-01-341-7616POSSIBLE MATCH
CONNECTOR,FLUID,PUMP
CA11741-60
4320-01-342-2484POSSIBLE MATCH
IMPELLER,PUMP,CENTRIFUGAL
CA11328-3-9.750IN
Frequently Asked Questions
What is NSN 4320-01-341-7590?
NSN 4320-01-341-7590 is a Ring,wearing, classified under FSC 4320, Power and Hand Pumps. Status: active.
What NSN replaces 4320-01-341-7590?
4 possible matches (shared part number, not a government interchangeability claim): 4320-01-341-7591, 4320-01-341-7592, 4320-01-341-7616. Verify interchangeability with system specifications before substitution.
What are the specifications of 4320-01-341-7590?
Key specifications for 4320-01-341-7590: End Item Identification: BUFFALO PUMPS 5X6 CLASS CCM PUMP; Material: COPPER ALLOY. 1 specification is documented in the U.S. Government catalog.
Is NSN 4320-01-341-7590 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.