The Parts Kit,ball Valve, cataloged under National Stock Number 4820-01-375-4571, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. 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. 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 | 4820-01-375-4571 |
| Primary Part Number | 556-6405334 FIND 14,19 |
| Item Name | Parts Kit,ball Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| End Item Source | 53711 |
| End Item Name | PARTS KIT |
| 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 |
|---|---|
| 211045561 AND 211036227 | Naval Sea Systems Command (USA) |
| 556-6405334 FIND 14,19 PRIMARY | Naval Sea Systems Command (USA) |
NSN 4820-01-375-4571 is a Parts Kit,ball Valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-375-4571 has 2 manufacturer part numbers on file: 211045561 AND 211036227 (Naval Sea Systems Command), 556-6405334 FIND 14,19 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-544-6463, 4820-01-633-2966. Verify interchangeability with system specifications before substitution.
Key specifications for 556-6405334 FIND 14,19: End Item Source: 53711; End Item Name: PARTS KIT; End Item Identification: BALL VALVE. 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.