The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-643-5710, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-643-5710 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Overall Diameter | 0.244 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL AND PASSIVATE AND COPPER |
| Material | COPPER ALLOY AND STEEL COMP 304 |
| 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 |
|---|---|
| 2321-10001 | 3/2 Design control — primary reference U.S. Government activity |
| 11454627 | 7/2 Vendor item drawing reference Us Army Aviation and Missile Command |
| 5101-4002-00 | 5/9 Secondary reference U.S. Government activity |
| 5101-4002-00 | 5/9 Secondary reference M/a-Com Inc |
NSN 5340-01-643-5710 is a Cap,protective,dust and Moisture, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-643-5710: Overall Diameter: 0.244 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN; Overall Length: 0.620 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN; Special Features: MATERIAL: CAP BODY IS COPPER ALLOY, BUSHING, BEADED CHAIN AND EYELETS ARE STAINLESS STEEL 304, AND SPRING RING IS COPPER ALLOY 172; FINISH: CAP BODY, SPRING RING AND BUSHING IS GOLD PLATE OVER GOLD FLASH OVER NICKEL PLATE OVER COPPER FLASH, AND BEADED CHAIN AND EYELETS ARE PASSIVATE OR GOLD PLATE OVER GOLD FLASH OVER NICKEL PLATE OVER COPPER FLASH; Surface Treatment: NICKEL AND PASSIVATE AND COPPER. 3 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.