NSN 1660-01-487-4609 · NIIN 014874609 · Part number 9325C03-1820-01
The Entwistle Company Llc · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 20722
Government record, cited
NSN 1660-01-487-4609 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-487-4609. Manufacturer of record part number: 9325C03-1820-01.
Also searched as1660-01-487-4609 ·
1660014874609 ·
NIIN 014874609 ·
01-487-4609 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 20722 · 9325C03-1820-01
Nearby stock numbers← 1660-01-487-4453 Mask, Oxygen
·
1660-01-487-5303 Heat Exchanger, Air to Air, Aircraft →
Features
Heat Exchanger,air — FSC 1660
1 manufacturer part number on file
Manufacturer of record: The Entwistle Company Llc
Identification
NSN: 1660-01-487-4609
NIIN: 014874609
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 9325C03-1820-01
Manufacturer: The Entwistle Company Llc
General Description
The Heat Exchanger,air, cataloged under National Stock Number 1660-01-487-4609, 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 Entwistle Company Llc. 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
1660-01-487-4609
Primary Part Number
9325C03-1820-01
Item Name
Heat Exchanger,air
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.
1660-00-001-1693
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 1660-01-487-4609?
NSN 1660-01-487-4609 is a Heat Exchanger,air, manufactured by The Entwistle Company Llc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-487-4609?
NSN 1660-01-487-4609 has 1 manufacturer part number on file: 9325C03-1820-01 (The Entwistle Company Llc).
What are the specifications of 9325C03-1820-01?
Key specifications for 9325C03-1820-01: Part Name Assigned by Controlling Agency: HEAT EXCHANGER, AIR TO OIL; End Item Identification: TRUCK,FIREFIGHTER. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-487-4609 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.