The Boot,dust and Moisture Seal, cataloged under National Stock Number 5340-01-346-3784, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 5340-01-346-3784 |
| Primary Part Number | 6386363-003 |
| Item Name | Boot,dust and Moisture Seal |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Accommodation Hole Width | 1.560 INCHES NOMINAL IN |
| Sealing Method | MECHANICAL |
| Base Overall Length | 3.280 INCHES NOMINAL IN |
| Base Width | 1.750 INCHES NOMINAL IN |
| Accommodation Hole Length | 2.290 INCHES NOMINAL IN |
| Material | RUBBER CHLOROPRENE BODY |
| 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 |
|---|---|
| 1981-003 | Enduro Rubber Co (USA) |
| 6386363-003 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5340-01-346-3784 is a Boot,dust and Moisture Seal, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-346-3784 has 2 manufacturer part numbers on file: 1981-003 (Enduro Rubber Co), 6386363-003 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5895-01-406-4353. Verify interchangeability with system specifications before substitution.
Key specifications for 6386363-003: Overall Height: 4.090 INCHES NOMINAL IN; Accommodation Hole Width: 1.560 INCHES NOMINAL IN; Sealing Method: MECHANICAL; Base Overall Length: 3.280 INCHES NOMINAL IN. 6 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.