The Valve,regulating,oxygen System P, cataloged under National Stock Number 4820-01-641-9840, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Airborne Systems North America of Nj Inc. Dba Airborne Systems of No. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-641-9840 |
| Primary Part Number | 603407-0 |
| Item Name | Valve,regulating,oxygen System P |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Airborne Systems North America of Nj Inc. Dba Airborne Systems of No |
| Status | ACTIVE |
| Filter | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 603407-0 PRIMARY | Airborne Systems North America of Nj Inc. Dba Airborne Systems of No (USA) |
NSN 4820-01-641-9840 is a Valve,regulating,oxygen System P, manufactured by Airborne Systems North America of Nj Inc. Dba Airborne Systems of No, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-641-9840 has 1 manufacturer part number on file: 603407-0 (Airborne Systems North America of Nj Inc. Dba Airborne Systems of No).
Key specifications for 603407-0: Part Name Assigned by Controlling Agency: RETAINER MICROPHONE; End Item Identification: PHARACHUTISTS' OXYGEN MASK; Filter: NOT INCLUDED. 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.
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.