The Mask,oxygen, cataloged under National Stock Number 1660-01-461-8163, 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 Avox Systems Inc Dba Avox Systems Inc. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-461-8163 |
| Primary Part Number | 651-280D |
| Item Name | Mask,oxygen |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Avox Systems Inc Dba Avox Systems Inc |
| Status | ACTIVE |
| Harness | INCLUDED |
| Design Type | NOSE AND MOUTH |
| Helmet Fastener | NOT INCLUDED |
| Supplementary Features | UNIT HAS A CLEAR LENS AND QUICK CONNECT ON OXYGEN HOSE; T.O. 15X5-5-3-1 FIG 1-1;RATED TO 40,000 FEET FT |
| Mask Size Designation | ADJUSTABLE |
| Microphone | INCLUDED |
| Oxygen System Type | PRESSURE DEMAND |
| Accessory Components and Quantity | MICROPHONE CORD ATTACHED TO HOSE ASSY |
| Intake Tube Length | 18.000 INCHES NOMINAL IN |
| Microphone Pocket | INCLUDED |
| Headband | NOT PROVIDED |
| Intake Tube Corrugated Feature | NOT INCLUDED |
| Material | RUBBER SILICONE CLASS Q FACEPIECE |
| Material | RUBBER SILICONE CLASS Q LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 651-280D PRIMARY | Avox Systems Inc Dba Avox Systems Inc (USA) |
NSN 1660-01-461-8163 is a Mask,oxygen, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-461-8163 has 1 manufacturer part number on file: 651-280D (Avox Systems Inc Dba Avox Systems Inc).
Key specifications for 651-280D: Harness: INCLUDED; Design Type: NOSE AND MOUTH; Helmet Fastener: NOT INCLUDED; Supplementary Features: UNIT HAS A CLEAR LENS AND QUICK CONNECT ON OXYGEN HOSE; T.O. 15X5-5-3-1 FIG 1-1;RATED TO 40,000 FEET FT. 14 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.
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.