FSC: 4140 — Fans, Air Circulators, and Blower Equipment
FSG: 41 — Refrigeration, AC, and Air Circulating Equipment
General Description
The Blade,impeller, cataloged under National Stock Number 4140-00-537-6299, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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
Blade,impeller
FSC / FSG
4140 — Fans, Air Circulators, and Blower Equipment (FSG 41)
Technical Specifications
Parameter
Value
NSN
4140-00-537-6299
Item Name
Blade,impeller
FSC / FSG
4140 / 41 — Fans, Air Circulators, and Blower Equipment
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
⇄Related Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3610-00-779-181812704POSSIBLE MATCH
CLAMP,HOOK
Possible match (shared part number)Smyth Mfg Co Sub of the Beacon Group
3010-01-021-9110S12704-301POSSIBLE MATCH
CLUTCH ASSEMBLY,FRICTION
Possible match (shared part number)B.w. Elliott Manufacturing Co., Llc
3020-01-205-8384A-24501-10POSSIBLE MATCH
COLLAR,SHIFT
Possible match (shared part number)Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
6550-01-356-483112704POSSIBLE MATCH
DEPROTEINIZING SOLUTION
Possible match (shared part number)Nova Biomedical Corp
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
1926A103H
3/2Design control — primary reference
U.S. Government activity
12704
5/9Secondary reference
U.S. Government activity
Related Parts
3610-00-779-1818POSSIBLE MATCH
CLAMP,HOOK
12704
3010-01-021-9110POSSIBLE MATCH
CLUTCH ASSEMBLY,FRICTION
S12704-301
3020-01-205-8384POSSIBLE MATCH
COLLAR,SHIFT
A-24501-10
6550-01-356-4831POSSIBLE MATCH
DEPROTEINIZING SOLUTION
12704
Frequently Asked Questions
What is NSN 4140-00-537-6299?
NSN 4140-00-537-6299 is a Blade,impeller, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
What NSN replaces 4140-00-537-6299?
4 possible matches (shared part number, not a government interchangeability claim): 3610-00-779-1818, 3010-01-021-9110, 3020-01-205-8384. Verify interchangeability with system specifications before substitution.
Is NSN 4140-00-537-6299 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.