NSN 1660-01-463-1683 · NIIN 014631683 · Part number 725
Thermatron Engineering, Inc. · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 1GQ06
Government record, cited
NSN 1660-01-463-1683 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-463-1683. Manufacturer of record part number: 725.
Also searched as1660-01-463-1683 ·
1660014631683 ·
NIIN 014631683 ·
01-463-1683 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 1GQ06 · 725
Nearby stock numbers← 1660-01-463-1567 Duct Assembly, Air Conditioning-H
·
1660-01-463-1690 Heat Exchanger, Fluid to Air →
Features
Heat Exchanger,fluid to Air — FSC 1660
1 manufacturer part number on file
Manufacturer of record: Thermatron Engineering, Inc.
Identification
NSN: 1660-01-463-1683
NIIN: 014631683
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 725
Manufacturer: Thermatron Engineering, Inc.
General Description
The Heat Exchanger,fluid to Air, cataloged under National Stock Number 1660-01-463-1683, 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 Thermatron Engineering, 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.
Technical Specifications
Parameter
Value
NSN
1660-01-463-1683
Primary Part Number
725
Item Name
Heat Exchanger,fluid to 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.
1660-00-006-4472
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 1660-01-463-1683?
NSN 1660-01-463-1683 is a Heat Exchanger,fluid to Air, manufactured by Thermatron Engineering, Inc., classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-463-1683?
NSN 1660-01-463-1683 has 1 manufacturer part number on file: 725 (Thermatron Engineering, Inc.).
What are the specifications of 725?
Key specifications for 725: End Item Identification: AN/TPN-31. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-463-1683 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.