PartsTable TECHNICAL DATA SHEET

NSN 4140-01-252-9502Government record, cited

Guard, Fan Impeller4140-01-252-9502

NSN 4140-01-252-9502 · NIIN 012529502 · Part number 2W6340

Caterpillar Inc Div Caterpillar Defense · FSC 4140 — Fans, Air Circulators, and Blower Equipment · FSG 41 — Refrigeration, AC, and Air Circulating Equipment · CAGE 11083

Government record, cited

NSN 4140-01-252-9502 — this item is cataloged by the U.S. Government under National Stock Number 4140-01-252-9502. Manufacturer of record part number: 2W6340.

Also searched as 4140-01-252-9502 · 4140012529502 · NIIN 012529502 · 01-252-9502 · FSC 4140 Fans, Air Circulators, and Blower Equipment · CAGE 11083 · 2W6340

Nearby stock numbers ← 4140-01-252-9501 Guard, Fan Impeller · 4140-01-253-0372 Fan, Vaneaxial →

Features

Guard,fan Impeller — FSC 4140
1 manufacturer part number on file
Manufacturer of record: Caterpillar Inc Div Caterpillar Defense

Identification

NSN: 4140-01-252-9502
NIIN: 012529502
FSC: 4140 — Fans, Air Circulators, and Blower Equipment
FSG: 41 — Refrigeration, AC, and Air Circulating Equipment
Primary part number: 2W6340
Manufacturer: Caterpillar Inc Div Caterpillar Defense

General Description

The Guard,fan Impeller, cataloged under National Stock Number 4140-01-252-9502, 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 Caterpillar Inc Div Caterpillar Defense. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Guard,fan Impeller
FSC / FSG	4140 — Fans, Air Circulators, and Blower Equipment (FSG 41)
Manufacturers	Caterpillar Inc Div Caterpillar Defense (CAGE 11083)

Technical Specifications

Parameter	Value
NSN	4140-01-252-9502
Primary Part Number	2W6340
Item Name	Guard,fan Impeller
FSC / FSG	4140 / 41 — Fans, Air Circulators, and Blower Equipment
Manufacturer	Caterpillar Inc Div Caterpillar Defense
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

Cross-Reference Index

Part Number	Manufacturer
2W6340 PRIMARY	Caterpillar Inc Div Caterpillar Defense (USA)

Reference documents

Reference	Meaning
2W6340	5/9 Secondary reference E.h. Baare Corp

No interchangeability data on file.

Other items in FSC 4140 — Fans, Air Circulators, and Blower Equipment

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4140-00-000-0082

IMPELLER,FAN,AXIAL

4140-00-001-1517

FAN,CENTRIFUGAL

4140-00-001-1536

FAN,VENTILATING

4140-00-001-1537

4140-00-001-1537 · Item name not on file

4140-00-001-3930

4140-00-001-3930 · Item name not on file

4140-00-001-6464

4140-00-001-6464 · Item name not on file

4140-00-001-6874

4140-00-001-6874 · Item name not on file

4140-00-001-6875

4140-00-001-6875 · Item name not on file

Frequently Asked Questions

What is NSN 4140-01-252-9502?

NSN 4140-01-252-9502 is a Guard,fan Impeller, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.

What part numbers are listed for NSN 4140-01-252-9502?

NSN 4140-01-252-9502 has 1 manufacturer part number on file: 2W6340 (Caterpillar Inc Div Caterpillar Defense).

Is NSN 4140-01-252-9502 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.

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