The Plug,protective,dust and Moistur, cataloged under National Stock Number 5340-01-053-4680, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-053-4680 |
| Primary Part Number | 1656170 |
| Item Name | Plug,protective,dust and Moistur |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| 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 | EA |
| Part Number | Manufacturer |
|---|---|
| 1656170 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 12KP817 | Oshkosh Defense Llc (USA) |
| 4N0999 | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 4N999 | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
| 12KP817 | 5/9 Secondary reference Oshkosh Corp |
NSN 5340-01-053-4680 is a Plug,protective,dust and Moistur, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-053-4680 has 3 manufacturer part numbers on file: 1656170 (Caterpillar Inc Div Caterpillar Defense), 12KP817 (Oshkosh Defense Llc), 4N0999 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 1656170: Special Features: SOLID RUBBER PLUG THAT IS A INTERFERENCE (FRICTION) FIT; End Item Identification: LOGISTICS SUPPORT VESSEL. 0 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.