PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet
MRO / Refrigeration, AC, and Air Circulating Equipment / 4140-01-143-5397

033778Fan,circulating

Rotron Incorporated · NSN 4140-01-143-5397 · FSC 4140 · No Item Name Available
Verified by PartsTable
NSN 4140-01-143-5397 — this item is cataloged by the U.S. Government under National Stock Number 4140-01-143-5397. Primary manufacturer part number: 033778.
MRO FSG 41 NO ITEM NAME AVAILABLE Technical Drawing
4140-01-143-5397 — No Item Name Available illustration
Features
  • Fan,circulating — FSC 4140
  • Width: 3.140 INCHES NOMINAL IN
  • Diameter: 2.812 INCHES NOMINAL IN
  • Length: 1.500 INCHES NOMINAL IN
  • Height: 3.140 INCHES NOMINAL IN
  • Rotation Direction for Which Designed: CLOCKWISE
  • Quantity: 1
  • Air Flow Rate: 34.000 CUBIC FEET PER MINUTE NOMINAL
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Fan,circulating, cataloged under National Stock Number 4140-01-143-5397, 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 Rotron Incorporated. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4140-01-143-5397
Primary Part Number033778
Item NameFan,circulating
FSC / FSG4140 / 41 — No Item Name Available
ManufacturerRotron Incorporated
StatusACTIVE
Width3.140 INCHES NOMINAL IN
Diameter2.812 INCHES NOMINAL IN
Length1.500 INCHES NOMINAL IN
Height3.140 INCHES NOMINAL IN
Rotation Direction for Which DesignedCLOCKWISE
Quantity1
Air Flow Rate34.000 CUBIC FEET PER MINUTE NOMINAL
Housing Inside Diameter2.812 INCHES NOMINAL IN
Drive TypeDIRECT
Style DesignatorFIXED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
⇄ Verified Substitutes 1
6509-01-578-7907 INTERCHANGEABLE
Enrofloxacin and Silver Sulfadia
Cross-Reference Index
Part NumberManufacturer
6134530-1 Lockheed Martin Corporation Div Rotary and Mission Systems (USA)
6134530-1 Lockheed Martin Corporation Div Rms - Manassas (USA)
033778 PRIMARY Rotron Incorporated (USA)
Related Parts
6509-01-578-7907INTERCHANGEABLE
ENROFLOXACIN AND SILVER SULFADIA

Frequently Asked Questions

What is NSN 4140-01-143-5397?

NSN 4140-01-143-5397 is a Fan,circulating, manufactured by Rotron Incorporated, classified under FSC 4140 (No Item Name Available). Status: active.

What are the part numbers for NSN 4140-01-143-5397?

NSN 4140-01-143-5397 has 3 cross-referenced part numbers: 6134530-1 (Lockheed Martin Corporation Div Rotary and Mission Systems), 6134530-1 (Lockheed Martin Corporation Div Rms - Manassas), 033778 (Rotron Incorporated).

What NSN replaces 4140-01-143-5397?

There is 1 known substitute for 4140-01-143-5397: 6509-01-578-7907. Verify interchangeability with system specifications before substitution.

What are the specifications of 033778?

Key specifications for 033778: Width: 3.140 INCHES NOMINAL IN; Diameter: 2.812 INCHES NOMINAL IN; Length: 1.500 INCHES NOMINAL IN; Height: 3.140 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

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Home · MRO Catalog · Refrigeration, AC, and Air Circulating Equipment · TDS Rev 1.0 · 2026-07-23