NSN 1660-01-646-5977 · NIIN 016465977 · Part number 051497-153
Hydraulics International, Inc. Dba Hydraulics International Inc · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 56529
Government record, cited
NSN 1660-01-646-5977 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-646-5977. Manufacturer of record part number: 051497-153.
Also searched as1660-01-646-5977 ·
1660016465977 ·
NIIN 016465977 ·
01-646-5977 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 56529 · 051497-153
Manufacturer of record: Hydraulics International, Inc. Dba Hydraulics International Inc
Identification
NSN: 1660-01-646-5977
NIIN: 016465977
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 051497-153
Manufacturer: Hydraulics International, Inc. Dba Hydraulics International Inc
General Description
The Housing,damper,air Duct, cataloged under National Stock Number 1660-01-646-5977, 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 Hydraulics International, Inc. Dba Hydraulics International Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Catalog Facts
Item Name
Housing,damper,air Duct
FSC / FSG
1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16)
Manufacturers
Hydraulics International, Inc. Dba Hydraulics International Inc (CAGE 56529)
Technical Specifications
Parameter
Value
NSN
1660-01-646-5977
Primary Part Number
051497-153
Item Name
Housing,damper,air Duct
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Manufacturer
Hydraulics International, Inc. Dba Hydraulics International Inc
Hydraulics International, Inc. Dba Hydraulics International 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.
1660-00-006-4472
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 1660-01-646-5977?
NSN 1660-01-646-5977 is a Housing,damper,air Duct, manufactured by Hydraulics International, Inc. Dba Hydraulics International Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-646-5977?
NSN 1660-01-646-5977 has 1 manufacturer part number on file: 051497-153 (Hydraulics International, Inc. Dba Hydraulics International Inc).
Is NSN 1660-01-646-5977 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.