The Cap,valve, cataloged under National Stock Number 4820-01-419-3029, 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 5 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-419-3029 |
| Primary Part Number | 6406591-MPAD FIND D4 |
| Item Name | Cap,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Valve Type for Which Designed | CHECK |
| Valve Model Number for Which Designed | HS-075 |
| Material Document and Classification | ASTMB150 ASSN STD SINGLE MATERIAL RESPONSE |
| Height | 5.500 INCHES NOMINAL IN |
| Material | ALUMINUM 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 |
|---|---|
| 6406591-MPAD FIND D4 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| C791-5001 FN MPAD-D4 | 5/2 Secondary reference U.S. Government activity |
| 218016100 | 5/2 Secondary reference U.S. Government activity |
| C791-5001 | D/9 Drawing number reference only U.S. Government activity |
| 6406591 | D/9 Drawing number reference only Naval Sea Systems Command |
| DF2300-4654 FN MPAD-D4 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 218016100 | 5/9 Secondary reference Naval Sea Systems Command |
| 556-6406591-MPAD-D4 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 4820-01-419-3029 is a Cap,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-419-3029 has 1 manufacturer part number on file: 6406591-MPAD FIND D4 (Naval Sea Systems Command).
Key specifications for 6406591-MPAD FIND D4: Valve Type for Which Designed: CHECK; Valve Model Number for Which Designed: HS-075; Material Document and Classification: ASTMB150 ASSN STD SINGLE MATERIAL RESPONSE; Height: 5.500 INCHES NOMINAL IN. 5 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.