The Heat,exchanger, cataloged under National Stock Number 1680-01-605-3546, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Allclear Aerospace & Defense, Inc. Dba Allclear Aerospace & Defense Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Heat,exchanger |
| FSC / FSG | 1680 — Miscellaneous Aircraft Accessories and Components (FSG 16) |
| Manufacturers | Allclear Aerospace & Defense, Inc. Dba Allclear Aerospace & Defense Inc (CAGE 1ZK21); Ametek Thermal Systems Inc (CAGE 12536) |
| Parameter | Value |
|---|---|
| NSN | 1680-01-605-3546 |
| Primary Part Number | AUTHORIZED DISTRIBUTOR |
| Item Name | Heat,exchanger |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Allclear Aerospace & Defense, Inc. Dba Allclear Aerospace & Defense Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| AUTHORIZED DISTRIBUTOR PRIMARY | Allclear Aerospace & Defense, Inc. Dba Allclear Aerospace & Defense Inc (USA) |
| 60761-001-1 PRIMARY | Ametek Thermal Systems Inc (USA) |
NSN 1680-01-605-3546 is a Heat,exchanger, manufactured by Allclear Aerospace & Defense, Inc. Dba Allclear Aerospace & Defense Inc, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-605-3546 has 2 manufacturer part numbers on file: AUTHORIZED DISTRIBUTOR (Allclear Aerospace & Defense, Inc. Dba Allclear Aerospace & Defense Inc), 60761-001-1 (Ametek Thermal Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 4810-01-672-3897. Verify interchangeability with system specifications before substitution.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1680-01-605-3546 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.