The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-351-4859, 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 L3harris Mas Inc Div L3harris Mas Inc.. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-351-4859 |
| Primary Part Number | 405S331001201-19 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | L3harris Mas Inc Div L3harris Mas Inc. |
| Status | ACTIVE |
| Aircraft Location | NOSE WHEEL WELL |
| Aircraft Mission Design Series | F/A-18 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 405S331001201-19 | L3harris Mas Inc Div L3harris Mas Inc. (CAN) |
| Reference | Meaning |
|---|---|
| 10105161 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A831160-1011 | 3/9 Design control — primary reference The Boeing Company Div Defense |
NSN 1660-01-351-4859 is a Duct Assembly,air Conditioning-H, manufactured by L3harris Mas Inc Div L3harris Mas Inc., classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-351-4859 has 1 manufacturer part number on file: 405S331001201-19 (L3harris Mas Inc Div L3harris Mas Inc.).
Key specifications for 405S331001201-19: Aircraft Location: NOSE WHEEL WELL; Aircraft Mission Design Series: F/A-18. 2 specifications are documented in the U.S. Government catalog.
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 1660-01-351-4859 has DEMIL Code B. 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.