The Parts Kit,ball Valve, cataloged under National Stock Number 4820-01-333-4946, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-333-4946 |
| Primary Part Number | 255582 PC 60 255584 PC 20 |
| Item Name | Parts Kit,ball Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| End Item Source | 96169 |
| End Item Name | BALL VALVE |
| 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 |
|---|---|
| 255582 PC 60 255584 PC 20 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 255582 PC 60 255584 PC 20 PRIMARY | Derbyshire Machine & Tool Co (USA) |
NSN 4820-01-333-4946 is a Parts Kit,ball Valve, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-333-4946 has 2 manufacturer part numbers on file: 255582 PC 60 255584 PC 20 (Huntington Ingalls Inc Div Newport News Shipbuilding), 255582 PC 60 255584 PC 20 (Derbyshire Machine & Tool Co).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-646-3666. Verify interchangeability with system specifications before substitution.
Key specifications for 255582 PC 60 255584 PC 20: End Item Source: 96169; End Item Name: BALL VALVE; End Item Identification: 2640-800X1,2640-801X1. 2 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.