The Heat Exchanger,air to Air,aircra, cataloged under National Stock Number 1660-01-331-0068, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Heat Exchanger,air to Air,aircra |
| FSC / FSG | 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16) |
| Manufacturers | Hamilton Sundstrand Corporation Dba Collins Aerospace (CAGE 73030); Honeywell International Inc. (CAGE 63389) |
| Parameter | Value |
|---|---|
| NSN | 1660-01-331-0068 |
| Primary Part Number | 764967-7 |
| Item Name | Heat Exchanger,air to Air,aircra |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| 764967-7 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| L8742918-1 PRIMARY | Honeywell International Inc. (USA) |
| Reference | Meaning |
|---|---|
| 201346300-001 | 5/9 Secondary reference U.S. Government activity |
| 1660PL1624784 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| L8742918 | 5/9 Secondary reference Honeywell International Inc. |
| 16VY002-6 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 1660-01-331-0068 is a Heat Exchanger,air to Air,aircra, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-331-0068 has 2 manufacturer part numbers on file: 764967-7 (Hamilton Sundstrand Corporation Dba Collins Aerospace), L8742918-1 (Honeywell International Inc.).
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 1660-01-331-0068 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.