The Clutch Pack, cataloged under National Stock Number 2520-00-189-9906, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Fmc Corp. Government technical data includes 1 specification, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-00-189-9906 |
| Primary Part Number | 2584806 |
| Item Name | Clutch Pack |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Fmc Corp |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL FORGING;21.972 IN. O/A LG IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2584806 PRIMARY | Fmc Corp (USA) |
| Reference | Meaning |
|---|---|
| X219990 | 5/9 Secondary reference Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| 2584806 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 2520-00-189-9906 is a Clutch Pack, manufactured by Fmc Corp, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-00-189-9906 has 1 manufacturer part number on file: 2584806 (Fmc Corp).
1 possible match (shared part number, not a government interchangeability claim): 5962-01-373-6589. Verify interchangeability with system specifications before substitution.
Key specifications for 2584806: General Characteristics Item Description: STEEL FORGING;21.972 IN. O/A LG IN. 1 specification is 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.