The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-512-6841, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-512-6841 |
| Primary Part Number | 6390650-12 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Design Type | FRICTION |
| Tube Outside Diameter for Which Designed | 6.000 INCHES NOMINAL IN |
| Opening Inside Diameter for Which Designed | 4.388 INCHES MINIMUM AND 4.468 INCHES MAXIMUM IN |
| Material | STEEL |
| Inside Diameter Length | 3.500 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 6390650 FIND 012 | Naval Sea Systems Command (USA) |
| 6390650-12 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5340-01-512-6841 is a Cap,protective,dust and Moisture, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-512-6841 has 2 manufacturer part numbers on file: 6390650 FIND 012 (Naval Sea Systems Command), 6390650-12 (Naval Sea Systems Command).
Key specifications for 6390650-12: Design Type: FRICTION; Tube Outside Diameter for Which Designed: 6.000 INCHES NOMINAL IN; Opening Inside Diameter for Which Designed: 4.388 INCHES MINIMUM AND 4.468 INCHES MAXIMUM IN; Special Features: ENDCAP, OUTBOARD; AISI 1018. 5 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.