NSN 1660-01-668-6584 · NIIN 016686584 · Part number 423785-3
Pacific Scientific Company Dba Pacific Scientific Co Div Services at Support Operations · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 1B1H6
Government record, cited
NSN 1660-01-668-6584 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-668-6584. Manufacturer of record part number: 423785-3.
Also searched as1660-01-668-6584 ·
1660016686584 ·
NIIN 016686584 ·
01-668-6584 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 1B1H6 · 423785-3
Manufacturer of record: Pacific Scientific Company Dba Pacific Scientific Co Div Services at Support Operations
Identification
NSN: 1660-01-668-6584
NIIN: 016686584
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 423785-3
Manufacturer: Pacific Scientific Company Dba Pacific Scientific Co Div Services at Support Operations
General Description
The Valve Assembly,environmental Con, cataloged under National Stock Number 1660-01-668-6584, 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 Pacific Scientific Company Dba Pacific Scientific Co Div Services at Support Operations. 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
1660-01-668-6584
Primary Part Number
423785-3
Item Name
Valve Assembly,environmental Con
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Manufacturer
Pacific Scientific Company Dba Pacific Scientific Co Div Services at Support Operations
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 1660-01-668-6584?
NSN 1660-01-668-6584 is a Valve Assembly,environmental Con, manufactured by Pacific Scientific Company Dba Pacific Scientific Co Div Services at Support Operations, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-668-6584?
NSN 1660-01-668-6584 has 2 manufacturer part numbers on file: 423785-3 (Pacific Scientific Company Dba Pacific Scientific Co Div Services at Support Operations), 423785-3 (Meggitt North Hollywood Inc).
What are the specifications of 423785-3?
Key specifications for 423785-3: 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 1660-01-668-6584 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.