NSN 1660-01-623-5970 · NIIN 016235970 · Part number 4505888
Rtx Corporation Div Pratt & Whitney · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 55820
Government record, cited
NSN 1660-01-623-5970 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-623-5970. Manufacturer of record part number: 4505888.
Also searched as1660-01-623-5970 ·
1660016235970 ·
NIIN 016235970 ·
01-623-5970 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 55820 · 4505888
Manufacturer of record: Rtx Corporation Div Pratt & Whitney
Identification
NSN: 1660-01-623-5970
NIIN: 016235970
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 4505888
Manufacturer: Rtx Corporation Div Pratt & Whitney
General Description
The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-623-5970, 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 Rtx Corporation Div Pratt & Whitney. 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
1660-01-623-5970
Primary Part Number
4505888
Item Name
Duct Assembly,air Conditioning-H
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.
1660-00-006-4472
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 1660-01-623-5970?
NSN 1660-01-623-5970 is a Duct Assembly,air Conditioning-H, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-623-5970?
NSN 1660-01-623-5970 has 1 manufacturer part number on file: 4505888 (Rtx Corporation Div Pratt & Whitney).
What are the specifications of 4505888?
Key specifications for 4505888: Part Name Assigned by Controlling Agency: C-5 AIRCRAFT; End Item Identification: DUCT,AIR. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-623-5970 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 1660-01-623-5970?
NSN 1660-01-623-5970 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.