FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories
Government record, cited
Also searched as1660-00-402-8902 ·
1660004028902 ·
NIIN 004028902 ·
00-402-8902 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · 3492-3WPH · 4A99028-103A
Nearby stock numbers← 1660-00-402-8900
·
1660-00-402-9861 Fan and Heater, Defr →
Features
Diffuser,air,aircraft Heating an — FSC 1660
FSC Application Data: ACFT AIR CONDITIONING INSTL. 12520-125A A
Identification
NSN: 1660-00-402-8902
NIIN: 004028902
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
General Description
The Diffuser,air,aircraft Heating an, cataloged under National Stock Number 1660-00-402-8902, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1660-00-402-8902
Item Name
Diffuser,air,aircraft Heating an
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Status
ACTIVE
FSC Application Data
ACFT AIR CONDITIONING INSTL. 12520-125A A
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
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
3492-3WPH
3/9Design control — primary reference
Mestek Inc. Dba Anemostat, a Mestek Company
4A99028-103A
1/2Source control — Government-approved source
U.S. Government activity
No interchangeability data on file.
Other items in FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1660-00-001-1693
DUCT ASSEMBLY,AIR CONDITIONING-H
1660-00-001-1754
BAFFLE,AIR
1660-00-001-2491
CAGE,BYPASS VALVE
1660-00-001-2493
1660-00-001-2493 · Item name not on file
1660-00-001-2496
CONTROL BOX,ELECTRICAL-ELECTRONI
1660-00-001-2497
1660-00-001-2497 · Item name not on file
1660-00-001-4130
1660-00-001-4130 · Item name not on file
1660-00-001-4479
CONTROLLER,AIR PRESSURE,AIRCRAFT
Frequently Asked Questions
What is NSN 1660-00-402-8902?
NSN 1660-00-402-8902 is a Diffuser,air,aircraft Heating an, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What are the specifications of 1660-00-402-8902?
Key specifications for 1660-00-402-8902: FSC Application Data: ACFT AIR CONDITIONING INSTL. 12520-125A A; End Item Identification: C-5A AIRCRAFT A. 1 specification is documented in the U.S. Government catalog.
Is NSN 1660-00-402-8902 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.