The Valve,vent, cataloged under National Stock Number 4820-01-145-5279, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Meggitt North Hollywood Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,vent |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Oshkosh Defense Llc (CAGE 75Q65); Meggitt North Hollywood Inc (CAGE 79318) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-145-5279 |
| Primary Part Number | F646ADG |
| Item Name | Valve,vent |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Meggitt North Hollywood Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 2AH134 | Oshkosh Defense Llc (USA) |
| F646ADG PRIMARY | Meggitt North Hollywood Inc (USA) |
| Reference | Meaning |
|---|---|
| 2AH134 | 5/9 Secondary reference Oshkosh Corp |
| F646ADG | 5/9 Secondary reference U.S. Government activity |
| F646 | 5/9 Secondary reference U.S. Government activity |
| F646 | D/9 Drawing number reference only Meggitt North Hollywood Inc |
NSN 4820-01-145-5279 is a Valve,vent, manufactured by Meggitt North Hollywood Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-145-5279 has 2 manufacturer part numbers on file: 2AH134 (Oshkosh Defense Llc), F646ADG (Meggitt North Hollywood Inc).
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.