The Disk,clutch,vehicular, cataloged under National Stock Number 2520-00-931-2140, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 2520-00-931-2140 |
| Primary Part Number | A6566E |
| Item Name | Disk,clutch,vehicular |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| Status | ACTIVE |
| Disk Material | STEEL COMP 1035 |
| Design Type | DRY |
| Outside Diameter | 7.820 INCHES NOMINAL IN |
| Flexibility | RIGID |
| Disk Type | EXTERNAL LUG |
| Spline Major Diameter | 9.292 INCHES MINIMUM AND 9.308 INCHES MAXIMUM IN |
| Features Provided | FRICTION MATERIAL FACING AND MATERIAL FACING GROOVE |
| Material | SINTERED METAL |
| Construction | SOLID |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 2520-00-931-2140 is a Disk,clutch,vehicular, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-00-931-2140 has 2 manufacturer part numbers on file: A6566E (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 73 51010 (Miba Gleitlager Gmbh).
Key specifications for A6566E: Disk Material: STEEL COMP 1035; Design Type: DRY; Outside Diameter: 7.820 INCHES NOMINAL IN; Flexibility: RIGID. 9 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.