The Regulator,oxygen,demand, cataloged under National Stock Number 1660-01-473-3549, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-473-3549 |
| Item Name | Regulator,oxygen,demand |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| FSC Application Data | BREATHING OXYGEN SYSTEM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 1660PL0560251 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 3260050-0204 | 7/2 Vendor item drawing reference U.S. Government activity |
| 1660PL1599909 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 3260050-0205 | 7/2 Vendor item drawing reference U.S. Government activity |
| 1660PL1599911 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 16VK059-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1660-01-473-3549 is a Regulator,oxygen,demand, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
Key specifications for 1660-01-473-3549: Overall Height: 5.750 INCHES MINIMUM AND 5.752 INCHES MAXIMUM IN; FSC Application Data: BREATHING OXYGEN SYSTEM; Overall Width: 3.000 INCHES MINIMUM AND 3.030 INCHES MAXIMUM IN; Special Features: SAME AS -1 EXCEPT FOR NVIS LIGHTING AND LONGER WIRE HARNESS;C/O G-MODULATION FITTING END PER MS33656G4, OUTLET FITTING 0.875 ID HOSE, INLET FITTING END WITH SEAL RING PER SAE AS1098G-5;USED ON OBOGS CRU-98/A PILOT REGULATOR;3.750 POUNDS MAX WEIGHT LBS. 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 1660-01-473-3549 has DEMIL Code D. 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.