The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-00-402-4860, 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 11 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-402-4860 |
| Primary Part Number | 20184-7 |
| 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, CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE |
| Design Type | THREADED |
| Overall Diameter | 0.750 INCHES NOMINAL IN |
| Tube Outside Diameter for Which Designed | 0.446 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-225/6, ALLOY 2024, T4 FED SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | ANODIZE |
| Thread Class | 3B |
| Material | ALUMINUM ALLOY 2024 |
| Thread Size and Series/type Designator | 1/2-20 UNF |
| Inside Diameter Length | 0.468 INCHES NOMINAL IN |
| 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 |
|---|---|
| 20184-7 PRIMARY | Rockwell Collins Inc (USA) |
NSN 5340-00-402-4860 is a Cap,protective,dust and Moisture, manufactured by Rockwell Collins Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-402-4860 has 1 manufacturer part number on file: 20184-7 (Rockwell Collins Inc).
2 possible matches (shared part number, not a government interchangeability claim): 2930-00-620-7301, 5895-01-276-3959. Verify interchangeability with system specifications before substitution.
Key specifications for 20184-7: Surface Treatment Document and Classification: MIL-A-8625, TYPE 2, CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE; Design Type: THREADED; Overall Diameter: 0.750 INCHES NOMINAL IN; Tube Outside Diameter for Which Designed: 0.446 INCHES NOMINAL IN. 11 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.