The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-239-9634, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-239-9634 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-M-3171, TYPE V MIL SPEC SINGLE TREATMENT RESPONSE |
| Design Type | THREADED |
| Overall Diameter | 4.440 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-591 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-M-38 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-Z-363 FED SPEC SINGLE MATERIAL RESPONSE OR L-P-349 FED SPEC SINGLE MATERIAL RESPONSE OR MIL-M-14 MIL SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | ANODIZE |
| Thread Class | 2B |
| Material | ALUMINUM ALLOY OR MAGNESIUM OR ZINC ALLOY OR CELLULOSE OR PLASTIC PHENOLIC |
| Thread Size and Series/type Designator | 3.4375-12 UNS |
| 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 |
| Reference | Meaning |
|---|---|
| MS27417-50 | 2/2 Government specification standardization U.S. Government activity |
NSN 5340-01-239-9634 is a Cap,protective,dust and Moisture, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-239-9634: Surface Treatment Document and Classification: MIL-A-8625, TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-M-3171, TYPE V MIL SPEC SINGLE TREATMENT RESPONSE; Design Type: THREADED; Overall Diameter: 4.440 INCHES NOMINAL IN; Material Document and Classification: QQ-A-591 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-M-38 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-Z-363 FED SPEC SINGLE MATERIAL RESPONSE OR L-P-349 FED SPEC SINGLE MATERIAL RESPONSE OR MIL-M-14 MIL SPEC SINGLE MATERIAL RESPONSE. 8 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.