The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-321-4176, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Libby Power Systems, Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-321-4176 |
| Primary Part Number | 115-8459 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Libby Power Systems, Llc |
| Status | ACTIVE |
| Design Type | FRICTION |
| Overall Diameter | 4.000 INCHES NOMINAL IN |
| Tube Outside Diameter for Which Designed | 3.200 INCHES NOMINAL IN |
| Material Document and Classification | ZZ-R-765, CLASS 3B, GRADE 70 FED SPEC SINGLE MATERIAL RESPONSE |
| Material | RUBBER SILICONE |
| Inside Diameter Length | 2.650 INCHES NOMINAL IN |
| Round Cap Outside Surface Condition | SMOOTH |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 115-8459 PRIMARY | Libby Power Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 0019-0007 | 5/2 Secondary reference U.S. Government activity |
NSN 5340-01-321-4176 is a Cap,protective,dust and Moisture, manufactured by Libby Power Systems, Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-321-4176 has 1 manufacturer part number on file: 115-8459 (Libby Power Systems, Llc).
Key specifications for 115-8459: Design Type: FRICTION; Overall Diameter: 4.000 INCHES NOMINAL IN; Tube Outside Diameter for Which Designed: 3.200 INCHES NOMINAL IN; Material Document and Classification: ZZ-R-765, CLASS 3B, GRADE 70 FED SPEC SINGLE MATERIAL RESPONSE. 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.
NSN 5340-01-321-4176 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.