The Ball,valve,ported, cataloged under National Stock Number 4820-01-458-6642, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-458-6642 |
| Primary Part Number | 803-6983491 PC 39 |
| Item Name | Ball,valve,ported |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Spherical Diameter | 3.332 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| 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 |
|---|---|
| 803-6983491 PC 39 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6983491-39 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 4820-01-458-6642 is a Ball,valve,ported, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-458-6642 has 1 manufacturer part number on file: 803-6983491 PC 39 (Naval Sea Systems Command).
Key specifications for 803-6983491 PC 39: Spherical Diameter: 3.332 INCHES NOMINAL IN; Special Features: BORE DIAMETER 2.50 IN IN; End Item Identification: NIMITZ CLASS CVN; Material: NICKEL ALLOY. 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.