The Parts Kit,ball Valve, cataloged under National Stock Number 4820-01-057-6567, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-057-6567 |
| Primary Part Number | 845-4558743 ITEM 37, 42 |
| Item Name | Parts Kit,ball Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Component Quantity | 3 |
| Supply Items and Quantities | BALL 1;SEAT 2 |
| 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 |
|---|---|
| 845-4558743 ITEM 37, 42 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2641-809-42PC2- | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 845-4558743 ITE | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 2641-809-42PC2-2640-801X02PC1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-057-6567 is a Parts Kit,ball Valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-057-6567 has 1 manufacturer part number on file: 845-4558743 ITEM 37, 42 (Naval Sea Systems Command).
Key specifications for 845-4558743 ITEM 37, 42: Component Quantity: 3; Supply Items and Quantities: BALL 1;SEAT 2. 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.