The Plug,expansion, cataloged under National Stock Number 5340-01-498-2660, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Engine Power Source Inc.. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Item Name | Plug,expansion |
| FSC / FSG | 5340 — Hardware, Commercial (FSG 53) |
| Manufacturers | Engine Power Source Inc. (CAGE 0HM32) |
| Parameter | Value |
|---|---|
| NSN | 5340-01-498-2660 |
| Primary Part Number | 15221-0349-0 |
| Item Name | Plug,expansion |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Engine Power Source Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 15221-0349-0 PRIMARY | Engine Power Source Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3331604 | 3/9 Design control — primary reference Powerboss Inc Div Minuteman Powerboss |
| FIG 7-18 INDEX 3 | D/9 Drawing number reference only Powerboss Inc Div Minuteman Powerboss |
NSN 5340-01-498-2660 is a Plug,expansion, manufactured by Engine Power Source Inc., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-498-2660 has 1 manufacturer part number on file: 15221-0349-0 (Engine Power Source Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 3431-01-506-4648, 5330-01-621-5185. 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.