NSN 1660-01-358-7520 · NIIN 013587520 · Part number 1166-50120
Aero Union Corporation · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 2T382
Government record, cited
NSN 1660-01-358-7520 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-358-7520. Manufacturer of record part number: 1166-50120.
Also searched as1660-01-358-7520 ·
1660013587520 ·
NIIN 013587520 ·
01-358-7520 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 2T382 · 1166-50120
Nearby stock numbers← 1660-01-358-7515 Duct Assembly, Air Conditioning-H
·
1660-01-358-7869 Duct Assembly, Air Conditioning-H →
Features
Diffuser,air,aircraft Heating an — FSC 1660
FSC Application Data: AIRCRAFT ECU SYSTEM
General Characteristics Item Description: ALUMINUM ALLOY AMS4218; COCKPIT AIR REDISTRIBUTION; 5.593 IN. LG; 5 VENT SLOTS IN
1 manufacturer part number on file
Manufacturer of record: Aero Union Corporation
Identification
NSN: 1660-01-358-7520
NIIN: 013587520
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 1166-50120
Manufacturer: Aero Union Corporation
General Description
The Diffuser,air,aircraft Heating an, cataloged under National Stock Number 1660-01-358-7520, 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 Aero Union Corporation. Government technical data includes 2 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
1660-01-358-7520
Primary Part Number
1166-50120
Item Name
Diffuser,air,aircraft Heating an
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Manufacturer
Aero Union Corporation
Status
ACTIVE
FSC Application Data
AIRCRAFT ECU SYSTEM
General Characteristics Item Description
ALUMINUM ALLOY AMS4218; COCKPIT AIR REDISTRIBUTION; 5.593 IN. LG; 5 VENT SLOTS IN
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 1660-01-358-7520?
NSN 1660-01-358-7520 is a Diffuser,air,aircraft Heating an, manufactured by Aero Union Corporation, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-358-7520?
NSN 1660-01-358-7520 has 1 manufacturer part number on file: 1166-50120 (Aero Union Corporation).
What are the specifications of 1166-50120?
Key specifications for 1166-50120: FSC Application Data: AIRCRAFT ECU SYSTEM; General Characteristics Item Description: ALUMINUM ALLOY AMS4218; COCKPIT AIR REDISTRIBUTION; 5.593 IN. LG; 5 VENT SLOTS IN; End Item Identification: 1-10 AIRCRAFT. 2 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-358-7520 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 1660-01-358-7520?
NSN 1660-01-358-7520 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.