The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-030-4866, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is O T S I. 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-030-4866 |
| Primary Part Number | B49993 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | O T S I |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE 2, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE |
| Design Type | FRICTION |
| Overall Diameter | 0.578 INCHES MINIMUM AND 0.608 INCHES MAXIMUM IN |
| Tube Outside Diameter for Which Designed | 0.490 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN |
| Material Document and Classification | ALLOY 6061-T6 NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM ALLOY 6061 |
| Inside Diameter Length | 1.625 INCHES NOMINAL 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 |
|---|---|
| B49993 PRIMARY | O T S I (USA) |
NSN 5340-01-030-4866 is a Cap,protective,dust and Moisture, manufactured by O T S I, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-030-4866 has 1 manufacturer part number on file: B49993 (O T S I).
Key specifications for B49993: Surface Treatment Document and Classification: MIL-A-8625, TYPE 2, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE; Design Type: FRICTION; Overall Diameter: 0.578 INCHES MINIMUM AND 0.608 INCHES MAXIMUM IN; Tube Outside Diameter for Which Designed: 0.490 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN. 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.