The Valve Assy,oxygen, cataloged under National Stock Number 1660-00-020-4540, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 1660-00-020-4540 |
| Primary Part Number | 10350-3 |
| Item Name | Valve Assy,oxygen |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Avox Systems Inc Dba Avox Systems Inc |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF FILTER 1,PACKING PREFORMED 3,SEAL 1,VALVE ASSEMBLY 1,HOSE CONNECTOR ASSEMBLY 1,BODY 4,GASKET 5,CONNECTOR 1,SHAFT 1,COVER 2,BUSHING 4,NUT 1,CONTROL CRANK ASSEMBLY 2,BRACKET 2,PIN 6,TRUNNION ASSEMBLY 1,LEVER 4,CAP 2,RETAINER 3,WASHER 7,BELLOWS ASSEMBLY 1,VALVE ASSEMBLY 1,STEM ASSEMBLY 2,INSERT 1,SEAR PLATE 1,LINK 1,BUMPER LINK 1,CONTROL CRANK 1,SEARING CAM 1,BUMPER LINK ASSEMBLY 1,PLATE 2,STOP 1,SLEEVE 1,CYLINDER 1,LUG 1,PISTON 1,SPRING 4,DAMPER ASSEMBLY 1,PLUG 1,PUSH ROD 1,PUSH BUTTON 1,O-RING 3 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 10350-3 PRIMARY | Avox Systems Inc Dba Avox Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 8148650 | A/1 Packaging identification reference U.S. Government activity |
NSN 1660-00-020-4540 is a Valve Assy,oxygen, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-020-4540 has 1 manufacturer part number on file: 10350-3 (Avox Systems Inc Dba Avox Systems Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5310-00-262-4354, 3130-01-229-4099. Verify interchangeability with system specifications before substitution.
Key specifications for 10350-3: General Characteristics Item Description: CONSISTS OF FILTER 1,PACKING PREFORMED 3,SEAL 1,VALVE ASSEMBLY 1,HOSE CONNECTOR ASSEMBLY 1,BODY 4,GASKET 5,CONNECTOR 1,SHAFT 1,COVER 2,BUSHING 4,NUT 1,CONTROL CRANK ASSEMBLY 2,BRACKET 2,PIN 6,TRUNNION ASSEMBLY 1,LEVER 4,CAP 2,RETAINER 3,WASHER 7,BELLOWS ASSEMBLY 1,VALVE ASSEMBLY 1,STEM ASSEMBLY 2,INSERT 1,SEAR PLATE 1,LINK 1,BUMPER LINK 1,CONTROL CRANK 1,SEARING CAM 1,BUMPER LINK ASSEMBLY 1,PLATE 2,STOP 1,SLEEVE 1,CYLINDER 1,LUG 1,PISTON 1,SPRING 4,DAMPER ASSEMBLY 1,PLUG 1,PUSH ROD 1,PUSH BUTTON 1,O-RING 3. 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 1660-00-020-4540 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.