PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9003557Fan,circulating

Raytheon Company Dba Raytheon · NSN 4140-01-581-6728 · FSC 4140 · No Item Name Available
Verified by PartsTable
NSN 4140-01-581-6728 — this item is cataloged by the U.S. Government under National Stock Number 4140-01-581-6728. Primary manufacturer part number: 9003557.
Features
  • Fan,circulating — FSC 4140
  • 1 verified cross-reference
  • Primary manufacturer: Raytheon Company Dba Raytheon
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Fan,circulating, cataloged under National Stock Number 4140-01-581-6728, is classified within Federal Supply Class 4140 (No Item Name Available) of the Refrigeration, AC, and Air Circulating Equipment group. The primary manufacturer of record is Raytheon Company Dba Raytheon. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4140-01-581-6728
Primary Part Number9003557
Item NameFan,circulating
FSC / FSG4140 / 41 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4730-00-142-2793140107 INTERCHANGEABLE
Packing Nut
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
4140-01-543-72629003672-1 INTERCHANGEABLE
Fan,circulating
Raytheon Company
Cross-Reference Index
Part NumberManufacturer
9003557 PRIMARY Raytheon Company Dba Raytheon (USA)
Related Parts
4730-00-142-2793INTERCHANGEABLE
PACKING NUT
140107
4140-01-543-7262INTERCHANGEABLE
FAN,CIRCULATING
9003672-1

Frequently Asked Questions

What is NSN 4140-01-581-6728?

NSN 4140-01-581-6728 is a Fan,circulating, manufactured by Raytheon Company Dba Raytheon, classified under FSC 4140 (No Item Name Available). Status: active.

What are the part numbers for NSN 4140-01-581-6728?

NSN 4140-01-581-6728 has 1 cross-referenced part number: 9003557 (Raytheon Company Dba Raytheon).

What NSN replaces 4140-01-581-6728?

There are 2 known substitutes for 4140-01-581-6728: 4730-00-142-2793, 4140-01-543-7262. Verify interchangeability with system specifications before substitution.

What are the specifications of 9003557?

Key specifications for 9003557: End Item Identification: AN/BQQ-10 POLAR AMP 9000901-100. 1 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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