The Mask,oxygen, cataloged under National Stock Number 1660-00-076-1606, 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 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 1660-00-076-1606 |
| Item Name | Mask,oxygen |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| FSC Application Data | OXYGEN SYSTEM,AIRCRAFT |
| Harness | INCLUDED |
| Design Type | NOSE |
| Helmet Fastener | INCLUDED |
| Mask Size Designation | MEDIUM |
| Microphone | INCLUDED |
| Oxygen System Type | PRESSURE DEMAND |
| Accessory Components and Quantity | CLINCHER 4,HOOKS 2,SCREWS,RD HEAD 6 |
| Intake Tube Length | 17.500 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | MBU-3-P MEDIUM TYPE |
| Microphone Pocket | INCLUDED |
| Headband | NOT PROVIDED |
| Intake Tube Corrugated Feature | INCLUDED |
| Material | PLASTIC POLYAMIDE NYLON LOCATION NOT OTHERWISE SPECIFIED |
| Material | RUBBER FACEPIECE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MILM25981 | 4/1 Identification reference U.S. Government activity |
| MBU3PMEDIUM | 2/2 Government specification standardization U.S. Government activity |
NSN 1660-00-076-1606 is a Mask,oxygen, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 1660-00-076-1607, 1660-00-584-9207, 1660-00-616-5692. Verify interchangeability with system specifications before substitution.
Key specifications for 1660-00-076-1606: FSC Application Data: OXYGEN SYSTEM,AIRCRAFT; Harness: INCLUDED; Design Type: NOSE; Helmet Fastener: INCLUDED. 15 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 1660-00-076-1606 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.