The Locking Device,valve, cataloged under National Stock Number 4820-01-441-8067, 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 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-441-8067 |
| Primary Part Number | 211040747 |
| Item Name | Locking Device,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | MATERIAL PER QQ-N-281, CL-A, FORM 4, COND HF |
| Special Markings | LOCKED OPEN |
| Material | NICKEL AND COPPER |
| 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 |
|---|---|
| 211040747 PRIMARY | Naval Sea Systems Command (USA) |
| 801-6404994 ASSEMBLY 99 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 801-6404994-AY9 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| DF330811 ASSY 99 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 6404994 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4820-01-441-8067 is a Locking Device,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-441-8067 has 2 manufacturer part numbers on file: 211040747 (Naval Sea Systems Command), 801-6404994 ASSEMBLY 99 (Naval Sea Systems Command).
Key specifications for 211040747: General Characteristics Item Description: MATERIAL PER QQ-N-281, CL-A, FORM 4, COND HF; Overall Length: 1.990 INCHES NOMINAL IN; End Item Identification: WEAPONS SYSTEM SEAWOLF CLASS SSN; Special Markings: LOCKED OPEN. 3 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.