The Diffuser,air,aircraft Heating an, cataloged under National Stock Number 1660-01-166-2494, 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 Boeing Company Div Legacy Am&m. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-166-2494 |
| Primary Part Number | L5351703-001 |
| Item Name | Diffuser,air,aircraft Heating an |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| General Characteristics Item Description | CRES;AL ALLOY;O/A DIMS 9.470 IN. LG;3.324 IN. W BENT TO 1.060 IN. RADIUS;NONREFLECTIVE FINISH IN |
| 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 |
|---|---|
| L5351703-001 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
| Reference | Meaning |
|---|---|
| L5338653-001 | 5/9 Secondary reference The Boeing Company Div Legacy Am&m |
NSN 1660-01-166-2494 is a Diffuser,air,aircraft Heating an, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-166-2494 has 1 manufacturer part number on file: L5351703-001 (The Boeing Company Div Legacy Am&m).
Key specifications for L5351703-001: General Characteristics Item Description: CRES;AL ALLOY;O/A DIMS 9.470 IN. LG;3.324 IN. W BENT TO 1.060 IN. RADIUS;NONREFLECTIVE FINISH IN; End Item Identification: B1-B ACFT. 1 specification is 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 1660-01-166-2494 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.