PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12666Ventilator,air Circulating

Itw Gse Inc. · NSN 2540-01-559-3081 · FSC 2540 · No Item Name Available
Verified by PartsTable
NSN 2540-01-559-3081 — this item is cataloged by the U.S. Government under National Stock Number 2540-01-559-3081. Primary manufacturer part number: 12666.
Features
  • Ventilator,air Circulating — FSC 2540
  • 2 verified cross-references
  • Primary manufacturer: Itw Gse Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ventilator,air Circulating, cataloged under National Stock Number 2540-01-559-3081, is classified within Federal Supply Class 2540 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Itw Gse Inc.. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN2540-01-559-3081
Primary Part Number12666
Item NameVentilator,air Circulating
FSC / FSG2540 / 25 — No Item Name Available
ManufacturerItw Gse Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 4
3020-00-741-187735635 INTERCHANGEABLE
Gear Cluster
New Venture Gear Inc New Process Gear Div
5950-00-998-4256546739 INTERCHANGEABLE
Reactor
Cae Usa Inc.
5330-01-119-876812666 INTERCHANGEABLE
Gasket
Westerbeke Corporation
5930-01-249-262012666 INTERCHANGEABLE
Switch,rotary
Lift Truck Service Co
Cross-Reference Index
Part NumberManufacturer
12666 Itw Gse Inc. (USA)
12666 Gse Holdings Inc. Dba Itw Military Gse Div Hobart Ground Systems (USA)
Related Parts
3020-00-741-1877INTERCHANGEABLE
GEAR CLUSTER
35635
5950-00-998-4256INTERCHANGEABLE
REACTOR
546739
5330-01-119-8768INTERCHANGEABLE
GASKET
12666
5930-01-249-2620INTERCHANGEABLE
SWITCH,ROTARY
12666

Frequently Asked Questions

What is NSN 2540-01-559-3081?

NSN 2540-01-559-3081 is a Ventilator,air Circulating, manufactured by Itw Gse Inc., classified under FSC 2540 (No Item Name Available). Status: active.

What are the part numbers for NSN 2540-01-559-3081?

NSN 2540-01-559-3081 has 2 cross-referenced part numbers: 12666 (Itw Gse Inc.), 12666 (Gse Holdings Inc. Dba Itw Military Gse Div Hobart Ground Systems).

What NSN replaces 2540-01-559-3081?

There are 4 known substitutes for 2540-01-559-3081: 3020-00-741-1877, 5950-00-998-4256, 5330-01-119-8768 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12666?

Key specifications for 12666: Part Name Assigned by Controlling Agency: VENTILATOR,AIR CIRC; End Item Identification: F-22 RAPTOR; Special Features: F-22 GROUND SUPPORT. 3 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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