NSN 1660-01-481-4378 · NIIN 014814378 · Part number 74A831295-1001
The Boeing Company Div Defense · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 76301
Government record, cited
NSN 1660-01-481-4378 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-481-4378. Manufacturer of record part number: 74A831295-1001.
Also searched as1660-01-481-4378 ·
1660014814378 ·
NIIN 014814378 ·
01-481-4378 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 76301 · 74A831295-1001
Manufacturer of record: The Boeing Company Div Defense
Identification
NSN: 1660-01-481-4378
NIIN: 014814378
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 74A831295-1001
Manufacturer: The Boeing Company Div Defense
General Description
The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-481-4378, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is The Boeing Company Div Defense. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Catalog Facts
Item Name
Duct Assembly,air Conditioning-H
FSC / FSG
1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16)
Manufacturers
The Boeing Company Div Defense (CAGE 76301)
Technical Specifications
Parameter
Value
NSN
1660-01-481-4378
Primary Part Number
74A831295-1001
Item Name
Duct Assembly,air Conditioning-H
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
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.
1660-00-006-4472
FLANGE,VALVE BODY
1660-00-009-5646
ADAPTER ASSEMBLY,BELLOWS
1660-00-019-8389
1660-00-019-8389 · Item name not on file
1660-00-019-8399
1660-00-019-8399 · Item name not on file
1660-00-031-5285
1660-00-031-5285 · Item name not on file
1660-00-302-4390
PISTON,REGULATING V
1660-00-441-0575
PISTON
1660-01-601-0729
ETHERNET SWITCH
Frequently Asked Questions
What is NSN 1660-01-481-4378?
NSN 1660-01-481-4378 is a Duct Assembly,air Conditioning-H, manufactured by The Boeing Company Div Defense, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-481-4378?
NSN 1660-01-481-4378 has 1 manufacturer part number on file: 74A831295-1001 (The Boeing Company Div Defense).
Is NSN 1660-01-481-4378 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.