The Plug Assembly,sealing, cataloged under National Stock Number 5340-01-677-3689, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Kvt Koenig Llc. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-677-3689 |
| Primary Part Number | MB 580-040 |
| Item Name | Plug Assembly,sealing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Kvt Koenig Llc |
| Status | ACTIVE |
| Design Type | FRICTION |
| Drive Type | RAISED RIB |
| Surface Treatment | ZINC |
| Material | STEEL |
| 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 |
|---|---|
| 12601911 | Oshkosh Defense Llc (USA) |
| MB 580-040 PRIMARY | Kvt Koenig Llc (USA) |
| Reference | Meaning |
|---|---|
| 12601911 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5340-01-677-3689 is a Plug Assembly,sealing, manufactured by Kvt Koenig Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-677-3689 has 2 manufacturer part numbers on file: 12601911 (Oshkosh Defense Llc), MB 580-040 (Kvt Koenig Llc).
Key specifications for MB 580-040: Design Type: FRICTION; Drive Type: RAISED RIB; Surface Treatment: ZINC; Part Name Assigned by Controlling Agency: PLUG,EXPANSION. 4 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.