NSN 1660-01-668-6579 · NIIN 016686579 · Part number 423775-1
Meggitt North Hollywood Inc · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 79318
Government record, cited
NSN 1660-01-668-6579 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-668-6579. Manufacturer of record part number: 423775-1.
Also searched as1660-01-668-6579 ·
1660016686579 ·
NIIN 016686579 ·
01-668-6579 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 79318 · 423775-1
Nearby stock numbers← 1660-01-668-3755 Duct Assembly, Air Conditioning-H
·
1660-01-668-6580 Valve Assembly, Environmental Con →
Features
Valve Assembly,environmental Con — FSC 1660
2 manufacturer part numbers on file
Manufacturer of record: Meggitt North Hollywood Inc
Identification
NSN: 1660-01-668-6579
NIIN: 016686579
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 423775-1
Manufacturer: Meggitt North Hollywood Inc
General Description
The Valve Assembly,environmental Con, cataloged under National Stock Number 1660-01-668-6579, 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 Meggitt North Hollywood Inc. 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
1660-01-668-6579
Primary Part Number
423775-1
Item Name
Valve Assembly,environmental Con
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Jamaica Bearings Co., Inc. Dba Jamaica Bearings Co., Inc. (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 1660-01-668-6579?
NSN 1660-01-668-6579 is a Valve Assembly,environmental Con, manufactured by Meggitt North Hollywood Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-668-6579?
NSN 1660-01-668-6579 has 2 manufacturer part numbers on file: 423775-1 (Meggitt North Hollywood Inc), 423775-1 (Jamaica Bearings Co., Inc. Dba Jamaica Bearings Co., Inc.).
What are the specifications of 423775-1?
Key specifications for 423775-1: Part Name Assigned by Controlling Agency: VALVE,ECS; End Item Identification: P-8A POSEIDON AIRCRAFT A. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-668-6579 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 1660-01-668-6579?
NSN 1660-01-668-6579 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.