NSN 1660-01-266-8788 · NIIN 012668788 · Part number E-789-4
Marine Electric Systems Inc · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 00062
Government record, cited
NSN 1660-01-266-8788 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-266-8788. Manufacturer of record part number: E-789-4.
Also searched as1660-01-266-8788 ·
1660012668788 ·
NIIN 012668788 ·
01-266-8788 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 00062 · E-789-4
Manufacturer of record: Marine Electric Systems Inc
Identification
NSN: 1660-01-266-8788
NIIN: 012668788
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: E-789-4
Manufacturer: Marine Electric Systems Inc
General Description
The Diffuser,air,aircraft Heating an, cataloged under National Stock Number 1660-01-266-8788, 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 Marine Electric Systems Inc. Government technical data includes 1 specification, 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
1660-01-266-8788
Primary Part Number
E-789-4
Item Name
Diffuser,air,aircraft Heating an
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.
1660-00-001-1693
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 1660-01-266-8788?
NSN 1660-01-266-8788 is a Diffuser,air,aircraft Heating an, manufactured by Marine Electric Systems Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-266-8788?
NSN 1660-01-266-8788 has 1 manufacturer part number on file: E-789-4 (Marine Electric Systems Inc).
What are the specifications of E-789-4?
Key specifications for E-789-4: General Characteristics Item Description: METAL. 1 specification is documented in the U.S. Government catalog.
Is NSN 1660-01-266-8788 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.