The Plug,protective,dust and Moistur, cataloged under National Stock Number 5340-01-187-5263, 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 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-187-5263 |
| Primary Part Number | 5188043 |
| Item Name | Plug,protective,dust and Moistur |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Design Type | FRICTION |
| Overall Diameter | 2.000 INCHES NOMINAL IN |
| Tube Outside Diameter for Which Designed | 2.000 INCHES NOMINAL IN |
| Connector Nominal Thread Size for Which Designed | 1.625 INCHES IN |
| Features Provided | SHOULDER |
| Opening Inside Diameter for Which Designed | 1.433 INCHES MINIMUM AND 1.439 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE |
| Thread Class | 2A A |
| Material | STEEL |
| Thread Size and Series/type Designator | 1.625-18 UNEF |
| 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 |
|---|---|
| 5188043 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5188043 | 5/9 Secondary reference Raytheon Company |
NSN 5340-01-187-5263 is a Plug,protective,dust and Moistur, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-187-5263 has 1 manufacturer part number on file: 5188043 (Naval Sea Systems Command).
Key specifications for 5188043: Design Type: FRICTION; Overall Diameter: 2.000 INCHES NOMINAL IN; Tube Outside Diameter for Which Designed: 2.000 INCHES NOMINAL IN; Connector Nominal Thread Size for Which Designed: 1.625 INCHES IN. 10 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.