FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories
Government record, cited
Also searched as1660-01-657-6877 ·
1660016576877 ·
NIIN 016576877 ·
01-657-6877 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Nearby stock numbers← 1660-01-657-6639 Refrigeration Unit, Air Cycle, Air
·
1660-01-657-7195 Adapter, Compressed Gas Cylinder →
Features
Diffuser,air,aircraft Heating an — FSC 1660
Reference Data and Literature: PARTS CATALOG
Shape: ROUND
Identification
NSN: 1660-01-657-6877
NIIN: 016576877
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 1660-01-657-6877, 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 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1660-01-657-6877
Item Name
Diffuser,air,aircraft Heating an
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Status
ACTIVE
Reference Data and Literature
PARTS CATALOG
Shape
ROUND
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
2120
3/9Design control — primary reference
Nellcor Puritan Bennett Llc Dba Covidien Div Covidien
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 1660-01-657-6877?
NSN 1660-01-657-6877 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 1660-01-657-6877?
Key specifications for 1660-01-657-6877: Reference Data and Literature: PARTS CATALOG; Shape: ROUND; Special Features: AIR OUTLET; Part Name Assigned by Controlling Agency: DIFFUSER, AIR, AIRCRAFT HEAT AND VENTILATING. 2 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-657-6877 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.