The Parts Kit,ball Valve, cataloged under National Stock Number 4820-01-536-0644, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-536-0644 |
| Primary Part Number | 556-7108811-53,55 |
| Item Name | Parts Kit,ball Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Component Quantity | 5 |
| Document Type | DESIGN CONTROL DRAWING |
| Component Document Page Number | 7-40 REV A |
| Document Identification | DRAWING 556-7108811 |
| Supply Items and Quantities | BALL 1, SEAT 4 |
| Criticality Code Justification | FEAT |
| Component Document Origin | GOVERNMENT |
| End Item Name | HYDRAULIC SYSTEM, TEST |
| Document Source | 53711 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 556-7108811-53,55 PRIMARY | Naval Sea Systems Command (USA) |
| 556-7108811 PART 53,55 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H792-0001 PART 53,55 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-536-0644 is a Parts Kit,ball Valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-536-0644 has 2 manufacturer part numbers on file: 556-7108811-53,55 (Naval Sea Systems Command), 556-7108811 PART 53,55 (Naval Sea Systems Command).
Key specifications for 556-7108811-53,55: Component Quantity: 5; Document Type: DESIGN CONTROL DRAWING; Component Document Page Number: 7-40 REV A; Document Identification: DRAWING 556-7108811. 9 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.