The Indicator,valve Opening, cataloged under National Stock Number 4820-01-356-3594, 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 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-356-3594 |
| Primary Part Number | 211052766 |
| Item Name | Indicator,valve Opening |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Individual Marking | OPEN AND SHUT |
| Mounting Facility Type and Quantity | 2 THREADED HOLE(S) |
| Mounting Hole Diameter | 0.438 INCHES NOMINAL IN |
| Diameter | 3.800 INCHES NOMINAL IN |
| Pointer Type | INDICATING ALL POINTERS |
| Material | NICKEL ALLOY CASE |
| Pointer Purpose | INDICATING VALVE POSITION |
| 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 |
|---|---|
| DF330704 FIND 25 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 801-6405339 FIND 25 | Naval Sea Systems Command (USA) |
| 211052766 PRIMARY | Naval Sea Systems Command (USA) |
NSN 4820-01-356-3594 is a Indicator,valve Opening, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-356-3594 has 3 manufacturer part numbers on file: DF330704 FIND 25 (Huntington Ingalls Inc Div Newport News Shipbuilding), 801-6405339 FIND 25 (Naval Sea Systems Command), 211052766 (Naval Sea Systems Command).
Key specifications for 211052766: Individual Marking: OPEN AND SHUT; Mounting Facility Type and Quantity: 2 THREADED HOLE(S); Mounting Hole Diameter: 0.438 INCHES NOMINAL IN; Diameter: 3.800 INCHES NOMINAL IN. 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.
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.