The Boot,dust and Moisture Seal, cataloged under National Stock Number 5340-01-381-3279, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Marvin Engineering Co, Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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: PG.
| Item Name | Boot,dust and Moisture Seal |
| FSC / FSG | 5340 — Hardware, Commercial (FSG 53) |
| Manufacturers | Marvin Engineering Co, Inc (CAGE 32067); 3m Company (CAGE 76381) |
| Parameter | Value |
|---|---|
| NSN | 5340-01-381-3279 |
| Primary Part Number | 8656516-1 |
| Item Name | Boot,dust and Moisture Seal |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Marvin Engineering Co, Inc |
| Status | ACTIVE |
| 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 | PG |
| Part Number | Manufacturer |
|---|---|
| 8656516-1 PRIMARY | Marvin Engineering Co, Inc (USA) |
| 7010340768 PRIMARY | 3m Company (USA) |
| Reference | Meaning |
|---|---|
| 8656516-1 | 1/2 Source control — Government-approved source U.S. Government activity |
| SJ8667 FP-144 | 5/9 Secondary reference 3m Company |
| SJ8667 FP-144 | 5/9 Secondary reference 3m Company Div Industrial Adhesives and Tapes Div |
| 8656516-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-381-3279 is a Boot,dust and Moisture Seal, manufactured by Marvin Engineering Co, Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-381-3279 has 2 manufacturer part numbers on file: 8656516-1 (Marvin Engineering Co, Inc), 7010340768 (3m Company).
1 possible match (shared part number, not a government interchangeability claim): 9390-01-396-9555. Verify interchangeability with system specifications before substitution.
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.