Heat Exchanger, Air to Air, Aircra1660-01-125-3052
NSN 1660-01-125-3052 · NIIN 011253052 · Part number 74A851601-1003
The Boeing Company Div Defense · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 76301
Government record, cited
NSN 1660-01-125-3052 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-125-3052. Manufacturer of record part number: 74A851601-1003.
Also searched as1660-01-125-3052 ·
1660011253052 ·
NIIN 011253052 ·
01-125-3052 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 76301 · 74A851601-1003
Manufacturer of record: The Boeing Company Div Defense
Identification
NSN: 1660-01-125-3052
NIIN: 011253052
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 74A851601-1003
Manufacturer: The Boeing Company Div Defense
General Description
The Heat Exchanger,air to Air,aircra, cataloged under National Stock Number 1660-01-125-3052, 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 The Boeing Company Div Defense. 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
1660-01-125-3052
Primary Part Number
74A851601-1003
Item Name
Heat Exchanger,air to Air,aircra
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 1660-01-125-3052?
NSN 1660-01-125-3052 is a Heat Exchanger,air to Air,aircra, manufactured by The Boeing Company Div Defense, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-125-3052?
NSN 1660-01-125-3052 has 2 manufacturer part numbers on file: 74A851601-1003 (The Boeing Company Div Defense), 74A851601-1003 (Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc).
What are the specifications of 74A851601-1003?
Key specifications for 74A851601-1003: Special Features: 16.920 IN. LG IN. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-125-3052 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 1660-01-125-3052?
NSN 1660-01-125-3052 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.