The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-00-402-4859, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Rockwell Collins Inc. Government technical data includes 9 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 | 5340-00-402-4859 |
| Primary Part Number | 20184-5 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Rockwell Collins Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE |
| Design Type | THREADED |
| Overall Diameter | 0.625 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-225/6, T4 FED SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | ANODIZE |
| Thread Class | 3B |
| Material | ALUMINUM ALLOY 2024 |
| Thread Size and Series/type Designator | 0.438-20 UNF |
| Round Cap Outside Surface Condition | SMOOTH |
| 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 |
|---|---|
| 20184-5 PRIMARY | Rockwell Collins Inc (USA) |
NSN 5340-00-402-4859 is a Cap,protective,dust and Moisture, manufactured by Rockwell Collins Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-402-4859 has 1 manufacturer part number on file: 20184-5 (Rockwell Collins Inc).
Key specifications for 20184-5: Surface Treatment Document and Classification: MIL-A-8625, TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE; Design Type: THREADED; Overall Diameter: 0.625 INCHES NOMINAL IN; Material Document and Classification: QQ-A-225/6, T4 FED SPEC SINGLE MATERIAL RESPONSE. 9 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.