NSN 1660-01-474-2564 · NIIN 014742564 · Part number 20509149-4
Lockheed Martin Corporation Div Rms · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 02769
Government record, cited
NSN 1660-01-474-2564 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-474-2564. Manufacturer of record part number: 20509149-4.
Also searched as1660-01-474-2564 ·
1660014742564 ·
NIIN 014742564 ·
01-474-2564 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 02769 · 20509149-4
Manufacturer of record: Lockheed Martin Corporation Div Rms
Identification
NSN: 1660-01-474-2564
NIIN: 014742564
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 20509149-4
Manufacturer: Lockheed Martin Corporation Div Rms
General Description
The Core,heat Exchanger, cataloged under National Stock Number 1660-01-474-2564, 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 Lockheed Martin Corporation Div Rms. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1660-01-474-2564
Primary Part Number
20509149-4
Item Name
Core,heat Exchanger
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories
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 1660-01-474-2564?
NSN 1660-01-474-2564 is a Core,heat Exchanger, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-474-2564?
NSN 1660-01-474-2564 has 1 manufacturer part number on file: 20509149-4 (Lockheed Martin Corporation Div Rms).
What are the specifications of 20509149-4?
Key specifications for 20509149-4: End Item Identification: COOLING SYSTEM ON A PHASE ARRAY RADAR ANTENNA FOR THE COBRA COUNTER BATTERY RADAR BATTLEFIELD FORCE SYSTEM. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-474-2564 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.