PartsTable TECHNICAL DATA SHEET

NSN 4140-01-538-2145Government record, cited

Fan, Tubeaxial4140-01-538-2145

NSN 4140-01-538-2145 · NIIN 015382145 · Part number B-2637

L3 Technologies, Inc. · FSC 4140 — Fans, Air Circulators, and Blower Equipment · FSG 41 — Refrigeration, AC, and Air Circulating Equipment · CAGE 09JB5

Government record, cited

NSN 4140-01-538-2145 — this item is cataloged by the U.S. Government under National Stock Number 4140-01-538-2145. Manufacturer of record part number: B-2637.

Also searched as 4140-01-538-2145 · 4140015382145 · NIIN 015382145 · 01-538-2145 · FSC 4140 Fans, Air Circulators, and Blower Equipment · CAGE 09JB5 · B-2637 · 10-4725-X ITEM 98 · 10-4725-X

Nearby stock numbers ← 4140-01-538-1852 Fan Assembly, Centrifugal · 4140-01-538-2733 Fan, Tubeaxial →

Features

Fan,tubeaxial — FSC 4140
1 manufacturer part number on file
Manufacturer of record: L3 Technologies, Inc.

Identification

NSN: 4140-01-538-2145
NIIN: 015382145
FSC: 4140 — Fans, Air Circulators, and Blower Equipment
FSG: 41 — Refrigeration, AC, and Air Circulating Equipment
Primary part number: B-2637
Manufacturer: L3 Technologies, Inc.

General Description

The Fan,tubeaxial, cataloged under National Stock Number 4140-01-538-2145, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is L3 Technologies, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Fan,tubeaxial
FSC / FSG	4140 — Fans, Air Circulators, and Blower Equipment (FSG 41)
Manufacturers	L3 Technologies, Inc. (CAGE 09JB5)

Technical Specifications

Parameter	Value
NSN	4140-01-538-2145
Primary Part Number	B-2637
Item Name	Fan,tubeaxial
FSC / FSG	4140 / 41 — Fans, Air Circulators, and Blower Equipment
Manufacturer	L3 Technologies, Inc.
Status	ACTIVE

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 Items 8

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

5935-01-538-8158G-5182 POSSIBLE MATCH

CONNECTOR ASSEMBLY,ELECTRICAL

Possible match (shared part number)L3 Technologies, Inc.

6130-01-538-9446B-2794 POSSIBLE MATCH

POWER SUPPLY

Possible match (shared part number)L3 Technologies, Inc.

5999-01-539-0199 POSSIBLE MATCH

SHIELDING GASKET,ELECTRONIC

Possible match (shared part number)

5905-01-539-1575 POSSIBLE MATCH

RESISTOR,VARIABLE,WIRE WOUND,NON

Possible match (shared part number)

5995-01-553-5150B-2644 POSSIBLE MATCH

CABLE ASSEMBLY,SPECIAL PURPOSE,E

Possible match (shared part number)L3 Technologies, Inc.

6150-01-555-1256 POSSIBLE MATCH

CABLE ASSEMBLY,SPECIAL PURPOSE,E

Possible match (shared part number)

5995-01-694-2352G-7441 POSSIBLE MATCH

CABLE ASSEMBLY,SPECIAL PURPOSE,E

Possible match (shared part number)L3 Technologies, Inc.

5998-01-694-4756B-3930 POSSIBLE MATCH

BACKPLANE ASSEMBLY

Possible match (shared part number)L3 Technologies, Inc.

Cross-Reference Index

Part Number	Manufacturer
B-2637	L3 Technologies, Inc. (USA)

Reference documents

Reference	Meaning
10-4725-X ITEM 98	5/9 Secondary reference L3 Technologies, Inc.
B-2637	3/9 Design control — primary reference L3 Technologies, Inc.
10-4725-X	D/9 Drawing number reference only L3 Technologies, Inc.

Related Parts

5935-01-538-8158POSSIBLE MATCH

CONNECTOR ASSEMBLY,ELECTRICAL

G-5182

6130-01-538-9446POSSIBLE MATCH

POWER SUPPLY

B-2794

5999-01-539-0199POSSIBLE MATCH

SHIELDING GASKET,ELECTRONIC

5905-01-539-1575POSSIBLE MATCH

RESISTOR,VARIABLE,WIRE WOUND,NON

5995-01-553-5150POSSIBLE MATCH

CABLE ASSEMBLY,SPECIAL PURPOSE,E

B-2644

6150-01-555-1256POSSIBLE MATCH

CABLE ASSEMBLY,SPECIAL PURPOSE,E

5995-01-694-2352POSSIBLE MATCH

CABLE ASSEMBLY,SPECIAL PURPOSE,E

G-7441

5998-01-694-4756POSSIBLE MATCH

BACKPLANE ASSEMBLY

B-3930

Frequently Asked Questions

What is NSN 4140-01-538-2145?

NSN 4140-01-538-2145 is a Fan,tubeaxial, manufactured by L3 Technologies, Inc., classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.

What part numbers are listed for NSN 4140-01-538-2145?

NSN 4140-01-538-2145 has 1 manufacturer part number on file: B-2637 (L3 Technologies, Inc.).

What NSN replaces 4140-01-538-2145?

8 possible matches (shared part number, not a government interchangeability claim): 5935-01-538-8158, 6130-01-538-9446, 5999-01-539-0199. Verify interchangeability with system specifications before substitution.

Is NSN 4140-01-538-2145 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.

PartsTable Design LLC · partstable.com