The Oxygen Mask Dispensing Unit, cataloged under National Stock Number 1660-01-407-2838, 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 2 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 | 1660-01-407-2838 |
| Primary Part Number | 833-743-2 |
| Item Name | Oxygen Mask Dispensing Unit |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Avox Systems Inc Dba Avox Systems Inc |
| Status | ACTIVE |
| FSC Application Data | ACFT EMERGENCY OXYGEN SYSTEM |
| General Characteristics Item Description | CHEMICAL, 28 VDC; 2 MASK UNIT; CONSIST OF: CONTAINER ASSY; OXYGEN GENERATOR; 2 MASK; NAMEPLATE; WEIGHT: 2.60 LBS VDC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 833-743-2 PRIMARY | Avox Systems Inc Dba Avox Systems Inc (USA) |
NSN 1660-01-407-2838 is a Oxygen Mask Dispensing Unit, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-407-2838 has 1 manufacturer part number on file: 833-743-2 (Avox Systems Inc Dba Avox Systems Inc).
Key specifications for 833-743-2: FSC Application Data: ACFT EMERGENCY OXYGEN SYSTEM; General Characteristics Item Description: CHEMICAL, 28 VDC; 2 MASK UNIT; CONSIST OF: CONTAINER ASSY; OXYGEN GENERATOR; 2 MASK; NAMEPLATE; WEIGHT: 2.60 LBS VDC; Special Features: OXYGEN OPERATION: 12 MIN.; End Item Identification: C-5A/B, C-141B, C-17A ACFT A. 2 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1660-01-407-2838 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.