NSN 1660-01-256-8261 · NIIN 012568261 · Part number 74A835699-1013
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 1660-01-256-8261 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-256-8261. Manufacturer of record part number: 74A835699-1013.
Also searched as1660-01-256-8261 ·
1660012568261 ·
NIIN 012568261 ·
01-256-8261 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 76301 · 74A835699-1013
Nearby stock numbers← 1660-01-256-8260 Duct Assembly, Air Conditioning-H
·
1660-01-256-8263 Duct Assembly, Air Conditioning-H →
Features
Duct Assembly,air Conditioning-H — FSC 1660
2 manufacturer part numbers on file
Manufacturer of record: The Boeing Company Div Defense
Identification
NSN: 1660-01-256-8261
NIIN: 012568261
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 74A835699-1013
Manufacturer: The Boeing Company Div Defense
General Description
The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-256-8261, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1660-01-256-8261
Primary Part Number
74A835699-1013
Item Name
Duct Assembly,air Conditioning-H
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA)
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 1660-01-256-8261?
NSN 1660-01-256-8261 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 1660-01-256-8261?
NSN 1660-01-256-8261 has 2 manufacturer part numbers on file: 74A835699-1013 (The Boeing Company Div Defense), 74A835699-1013 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems).
What are the specifications of 74A835699-1013?
Key specifications for 74A835699-1013: Special Features: EPOXY RESIN IMPREGNATED CLOTH LAMINATE; End Item Identification: AIRCRAFT MODEL F-18. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-256-8261 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.
What is the DEMIL code for NSN 1660-01-256-8261?
NSN 1660-01-256-8261 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.