The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-431-8644, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 7 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-431-8644 |
| Primary Part Number | 12927792 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Design Type | THREADED |
| Tube Outside Diameter for Which Designed | 1.3750 INCHES NOMINAL IN |
| Opening Inside Diameter for Which Designed | 1.9400 INCHES MINIMUM AND 2.0600 INCHES MAXIMUM IN |
| Thread Class | 2B |
| Material | STEEL |
| Thread Size and Series/type Designator | 1.375-12 UNF |
| Round Cap Outside Surface Condition | KNURLED |
| 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 |
|---|---|
| 12927792 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 5340-01-431-8644 is a Cap,protective,dust and Moisture, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-431-8644 has 1 manufacturer part number on file: 12927792 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 12927792: Design Type: THREADED; Tube Outside Diameter for Which Designed: 1.3750 INCHES NOMINAL IN; Opening Inside Diameter for Which Designed: 1.9400 INCHES MINIMUM AND 2.0600 INCHES MAXIMUM IN; Special Features: THE ITEM IS MADE TO SPECIFICATION ASTM-A-108; SURFACE TREATMENT PER MIL-STD-171, FINISH 1.1.3. 7 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.