The Stem,fluid Valve, cataloged under National Stock Number 4820-01-406-4790, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-406-4790 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Valve Type for Which Designed | BALL |
| Stem Actuating End Type | SLOTTED |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE |
| Valve Size for Which Designed | 0.500 INCHES IN |
| Material | NICKEL ALLOY |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| 801-6405343 FIND 6L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 801-6405343 FIND 6 | 5/1 Secondary reference Naval Sea Systems Command |
| 6405343 FN 6 | 5/1 Secondary reference Naval Sea Systems Command |
| 211079419 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 211079419L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 6405343 FN 6SS | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| DF330709 FN 6SS | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| DF330709 FN 6 | 5/1 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4820-01-406-4790 is a Stem,fluid Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-406-4790: Valve Type for Which Designed: BALL; Stem Actuating End Type: SLOTTED; Criticality Code Justification: ZZZY; Material Document and Classification: QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE. 7 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.
NSN 4820-01-406-4790 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.