The Valve,vent, cataloged under National Stock Number 4820-01-161-6547, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Power Packer North America Inc. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-161-6547 |
| Primary Part Number | A8581900 |
| Item Name | Valve,vent |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Power Packer North America Inc |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Material | STEEL CORROSION RESISTING BODY |
| Thread Series Designator | UNEF ALL ENDS |
| 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 |
|---|---|
| A8581900 PRIMARY | Power Packer North America Inc (USA) |
| Reference | Meaning |
|---|---|
| 90003559 | 5/2 Secondary reference U.S. Government activity |
| A8581-900 | 5/9 Secondary reference Enerpac Tool Group Corp |
NSN 4820-01-161-6547 is a Valve,vent, manufactured by Power Packer North America Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-161-6547 has 1 manufacturer part number on file: A8581900 (Power Packer North America Inc).
Key specifications for A8581900: Thread Direction: RIGHT-HAND ALL ENDS; Nominal Thread Size: 0.250 INCHES ALL ENDS IN; End Item Identification: 2320-01-121-2102; Material: STEEL CORROSION RESISTING BODY. 4 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.