The Disk,clutch,vehicular, cataloged under National Stock Number 2520-00-125-7253, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Rockford Powertrain Inc Div Powertrain Rockford, Inc.. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2520-00-125-7253 |
| Primary Part Number | 3-13668 |
| Item Name | Disk,clutch,vehicular |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Rockford Powertrain Inc Div Powertrain Rockford, Inc. |
| Status | ACTIVE |
| Disk Material | STEEL |
| Design Type | WET |
| Teeth Quantity Per Disk | 53 |
| Outside Diameter | 13.500 INCHES NOMINAL IN |
| Flexibility | RIGID |
| Disk Type | INTERNAL TEETH |
| Features Provided | FRICTION MATERIAL FACING |
| Material | ASBESTOS |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 135RC4 | Oshkosh Defense Llc (USA) |
| 3-13668 PRIMARY | Rockford Powertrain Inc Div Powertrain Rockford, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 135RC4 | 5/9 Secondary reference Oshkosh Corp |
| UCL13-11553 | 5/9 Secondary reference Rockford Powertrain Inc Div Powertrain Rockford, Inc. |
| 3-234-430-13668 | 5/9 Secondary reference Rockford Powertrain Inc Div Powertrain Rockford, Inc. |
NSN 2520-00-125-7253 is a Disk,clutch,vehicular, manufactured by Rockford Powertrain Inc Div Powertrain Rockford, Inc., classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-00-125-7253 has 2 manufacturer part numbers on file: 135RC4 (Oshkosh Defense Llc), 3-13668 (Rockford Powertrain Inc Div Powertrain Rockford, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 2920-00-456-5502. Verify interchangeability with system specifications before substitution.
Key specifications for 3-13668: Disk Material: STEEL; Design Type: WET; Teeth Quantity Per Disk: 53; Outside Diameter: 13.500 INCHES NOMINAL IN. 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.