The Regulator,oxygen,demand, cataloged under National Stock Number 1660-01-240-6679, 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 Smith and Smith Aircraft Co. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-240-6679 |
| Primary Part Number | 305-592803-3 |
| Item Name | Regulator,oxygen,demand |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Smith and Smith Aircraft Co |
| Status | ACTIVE |
| Flow Indicator | INCLUDED |
| Lighted Panel | NOT INCLUDED |
| Pressure Gage | NOT INCLUDED |
| On-Off Switch | NOT INCLUDED |
| Installation Design | NONPORTABLE |
| Marking Finish | ANY ACCEPTABLE |
| 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 |
|---|---|
| 305-592803-3 | Smith and Smith Aircraft Co (USA) |
| Reference | Meaning |
|---|---|
| 305-592803-3 | 3/9 Design control — primary reference U.S. Government activity |
NSN 1660-01-240-6679 is a Regulator,oxygen,demand, manufactured by Smith and Smith Aircraft Co, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-240-6679 has 1 manufacturer part number on file: 305-592803-3 (Smith and Smith Aircraft Co).
Key specifications for 305-592803-3: Flow Indicator: INCLUDED; Lighted Panel: NOT INCLUDED; Pressure Gage: NOT INCLUDED; Special Features: SILVER BRAZE SURFACE TREATMENT. 6 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 1660-01-240-6679 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.