PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A737Impeller,pump,centrifugal

Circor Naval Solutions Llc Dba Warren Pumps · NSN 4320-01-186-3707 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-186-3707 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-186-3707. Primary manufacturer part number: A737.
Features
  • Impeller,pump,centrifugal — FSC 4320
  • Material: NICKEL ALLOY
  • Overall Diameter: 10.500 INCHES NOMINAL IN
  • 4 verified cross-references
  • Primary manufacturer: Circor Naval Solutions Llc Dba Warren Pumps
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Nickel Alloy construction
General Description

The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-186-3707, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-186-3707
Primary Part NumberA737
Item NameImpeller,pump,centrifugal
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCircor Naval Solutions Llc Dba Warren Pumps
StatusACTIVE
MaterialNICKEL ALLOY
Overall Diameter10.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3040-01-005-6004A7-37 INTERCHANGEABLE
Shaft,straight
Roller Bearing Co of America, Inc Div Pic Design
4320-01-186-0956A738 INTERCHANGEABLE
Impeller,pump,centrifugal
Circor Naval Solutions Llc Dba Warren Pumps
3040-01-186-3588656C0402J030A INTERCHANGEABLE
Shaft,straight
Circor Naval Solutions Llc Dba Warren Pumps
4320-01-186-3593661B0147H024A INTERCHANGEABLE
Deflector,dirt and Liquid
Circor Naval Solutions Llc Dba Warren Pumps
Cross-Reference Index
Part NumberManufacturer
A737 PRIMARY Circor Naval Solutions Llc Dba Warren Pumps (USA)
PL-999D0562 PIECE 26 Circor Naval Solutions Llc Dba Warren Pumps (USA)
657D1465 10.5IN DIA Circor Naval Solutions Llc Dba Warren Pumps (USA)
999D0562 Circor Naval Solutions Llc Dba Warren Pumps (USA)
Related Parts
3040-01-005-6004INTERCHANGEABLE
SHAFT,STRAIGHT
A7-37
4320-01-186-0956INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
A738
3040-01-186-3588INTERCHANGEABLE
SHAFT,STRAIGHT
656C0402J030A
4320-01-186-3593INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
661B0147H024A

Frequently Asked Questions

What is NSN 4320-01-186-3707?

NSN 4320-01-186-3707 is a Impeller,pump,centrifugal, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-186-3707?

NSN 4320-01-186-3707 has 4 cross-referenced part numbers: A737 (Circor Naval Solutions Llc Dba Warren Pumps), PL-999D0562 PIECE 26 (Circor Naval Solutions Llc Dba Warren Pumps), 657D1465 10.5IN DIA (Circor Naval Solutions Llc Dba Warren Pumps), 999D0562 (Circor Naval Solutions Llc Dba Warren Pumps).

What NSN replaces 4320-01-186-3707?

There are 4 known substitutes for 4320-01-186-3707: 3040-01-005-6004, 4320-01-186-0956, 3040-01-186-3588 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A737?

Key specifications for A737: Material: NICKEL ALLOY; Overall Diameter: 10.500 INCHES NOMINAL IN. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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