The Disk,valve, cataloged under National Stock Number 4820-00-375-7542, 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 8 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Disk,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 4820-00-375-7542 |
| Primary Part Number | 564-3601-936611ALT5PCD |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Outside Diameter | 3.125 INCHES NOMINAL IN |
| Style Designator | PLUG |
| Seat Angle | 40.0 DEGREES NOMINAL |
| Nominal Thread Size | 2.000 INCHES IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 12 |
| Material | COPPER ALLOY |
| Thread Series Designator | UN |
| 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 |
|---|---|
| 564-3601-936611ALT5PCD PRIMARY | Naval Sea Systems Command (USA) |
| K1-3601-1000194ALT3PCD PRIMARY | Naval Sea Systems Command (USA) |
| 3601-1286372RECBPC3 PRIMARY | Naval Sea Systems Command (USA) |
| 3601-1286275REVBPC3 PRIMARY | Naval Sea Systems Command (USA) |
| 571-3601-1302659REVAPC3 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 571-3601-1302659REVAPC3 | 5/9 Secondary reference U.S. Government activity |
| 609-4775887 ITE | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 3965-26REVDPC3 | 5/9 Secondary reference U.S. Government activity |
| 564-3601-936611ALT5PCD | 5/9 Secondary reference U.S. Government activity |
| 609-4775887ITEM | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 3965-26REVBPC3 | 5/9 Secondary reference U.S. Government activity |
| 3601-1286372REVBPC3 | 5/9 Secondary reference U.S. Government activity |
| K1-3601-1000194ALT3PCD | 5/9 Secondary reference U.S. Government activity |
| 3601-1286275REVBPC3 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-375-7542 is a Disk,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-375-7542 has 5 manufacturer part numbers on file: 564-3601-936611ALT5PCD (Naval Sea Systems Command), K1-3601-1000194ALT3PCD (Naval Sea Systems Command), 3601-1286372RECBPC3 (Naval Sea Systems Command), 3601-1286275REVBPC3 (Naval Sea Systems Command), 571-3601-1302659REVAPC3 (Naval Sea Systems Command).
Key specifications for 564-3601-936611ALT5PCD: Overall Height: 1.062 INCHES NOMINAL IN; Outside Diameter: 3.125 INCHES NOMINAL IN; Style Designator: PLUG; Seat Angle: 40.0 DEGREES NOMINAL. 8 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.