The Regulator,oxygen,demand, cataloged under National Stock Number 1660-00-255-8080, 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 Ingersoll-Rand Company Dba Ingersoll-Rand. 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-255-8080 |
| Primary Part Number | 0-506-1 |
| Item Name | Regulator,oxygen,demand |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Ingersoll-Rand Company Dba Ingersoll-Rand |
| Status | ACTIVE |
| Installation Design | PORTABLE |
| 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 |
|---|---|
| 0-506-1 PRIMARY | Ingersoll-Rand Company Dba Ingersoll-Rand (USA) |
NSN 1660-00-255-8080 is a Regulator,oxygen,demand, manufactured by Ingersoll-Rand Company Dba Ingersoll-Rand, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-255-8080 has 1 manufacturer part number on file: 0-506-1 (Ingersoll-Rand Company Dba Ingersoll-Rand).
2 possible matches (shared part number, not a government interchangeability claim): 5940-00-686-8215, 5120-01-241-7556. Verify interchangeability with system specifications before substitution.
Key specifications for 0-506-1: Installation Design: PORTABLE. 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 1660-00-255-8080 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.