NSN 1660-01-267-9537 · NIIN 012679537 · Part number L5351643-009
The Boeing Company Div Legacy Am&m · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 43999
Government record, cited
NSN 1660-01-267-9537 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-267-9537. Manufacturer of record part number: L5351643-009.
Also searched as1660-01-267-9537 ·
1660012679537 ·
NIIN 012679537 ·
01-267-9537 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 43999 · L5351643-009
Nearby stock numbers← 1660-01-267-9536 Duct Assembly, Air Conditioning-H
·
1660-01-268-2060 Duct Assembly, Air Conditioning-H →
Features
Duct Assembly,air Conditioning-H — FSC 1660
Aircraft Station Number: YN232.5
Material Document and Classification: MIL-A-21180 CLASS 10 MIL SPEC SINGLE MATERIAL RESPONSE
Aircraft Location: PRECOOLER RAM AIR DUCT
Material: ALUMINUM ALLOY
Aircraft Mission Design Series: B-1B
1 manufacturer part number on file
Manufacturer of record: The Boeing Company Div Legacy Am&m
Identification
NSN: 1660-01-267-9537
NIIN: 012679537
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: L5351643-009
Manufacturer: The Boeing Company Div Legacy Am&m
General Description
The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-267-9537, 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 Legacy Am&m. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1660-01-267-9537
Primary Part Number
L5351643-009
Item Name
Duct Assembly,air Conditioning-H
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Manufacturer
The Boeing Company Div Legacy Am&m
Status
ACTIVE
Aircraft Station Number
YN232.5
Material Document and Classification
MIL-A-21180 CLASS 10 MIL SPEC SINGLE MATERIAL RESPONSE
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 1660-01-267-9537?
NSN 1660-01-267-9537 is a Duct Assembly,air Conditioning-H, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-267-9537?
NSN 1660-01-267-9537 has 1 manufacturer part number on file: L5351643-009 (The Boeing Company Div Legacy Am&m).
What are the specifications of L5351643-009?
Key specifications for L5351643-009: Aircraft Station Number: YN232.5; Material Document and Classification: MIL-A-21180 CLASS 10 MIL SPEC SINGLE MATERIAL RESPONSE; Special Features: ALUMINUM ALLOY A356 PER MIL-A-21180 CLASS 10; REPLACES -003; NHA L5358005; Aircraft Location: PRECOOLER RAM AIR DUCT. 5 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-267-9537 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 1660-01-267-9537?
NSN 1660-01-267-9537 has DEMIL Code Q. 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.