The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-217-5398, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-217-5398 |
| Primary Part Number | 989663 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE A |
| Design Type | THREADED |
| Overall Diameter | 0.586 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-250/2 FED SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | CHROMATE |
| Material | ALUMINUM ALLOY |
| Thread Size and Series/type Designator | 0.5625-20 UN |
| Inside Diameter Length | 0.210 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 989663 | Eaton Aerospace, Llc Dba Jackson South (USA) |
| Reference | Meaning |
|---|---|
| MIL-C-5501/14 | 5/9 Secondary reference U.S. Government activity |
| NAS841-6 | 3/2 Design control — primary reference U.S. Government activity |
| NAS841 | 3/1 Design control — primary reference U.S. Government activity |
| M5501/14-6G | 5/9 Secondary reference U.S. Government activity |
NSN 5340-01-217-5398 is a Cap,protective,dust and Moisture, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-217-5398 has 1 manufacturer part number on file: 989663 (Eaton Aerospace, Llc Dba Jackson South).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-218-0797. Verify interchangeability with system specifications before substitution.
Key specifications for 989663: Surface Treatment Document and Classification: MIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE A; Design Type: THREADED; Overall Diameter: 0.586 INCHES NOMINAL IN; Material Document and Classification: QQ-A-250/2 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.