The Disk,clutch,vehicular, cataloged under National Stock Number 2520-00-107-0027, 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 2 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-00-107-0027 |
| Primary Part Number | 4-31122 |
| Item Name | Disk,clutch,vehicular |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Rockford Powertrain Inc Div Powertrain Rockford, Inc. |
| Status | ACTIVE |
| Spline Type | STRAIGHT |
| Spline Major Diameter | 1.756 INCHES MINIMUM AND 1.762 INCHES MAXIMUM 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 |
|---|---|
| 11664387 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 93500 | Alto Products Corp. Al (USA) |
| 4-31122 PRIMARY | Rockford Powertrain Inc Div Powertrain Rockford, Inc. (USA) |
| 150-006-0971 | Setco Automotive Na Inc (USA) |
| Reference | Meaning |
|---|---|
| 150-006-0971 | 5/9 Secondary reference Haldex Brake Products Corporation |
| UCL-38-7905-2 | 5/9 Secondary reference Rockford Powertrain Inc Div Powertrain Rockford, Inc. |
| 2520001070027 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 150-6-971 | 5/9 Secondary reference Lipe Corp |
| UCL-37-7905-2 | 5/9 Secondary reference Rockford Powertrain Inc Div Powertrain Rockford, Inc. |
| 4-27474 | 5/9 Secondary reference Rockford Powertrain Inc Div Powertrain Rockford, Inc. |
NSN 2520-00-107-0027 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 2520-00-107-0027 has 4 manufacturer part numbers on file: 11664387 (U S Army Tank Automotive Command Amsta-Im-Mm), 93500 (Alto Products Corp. Al), 4-31122 (Rockford Powertrain Inc Div Powertrain Rockford, Inc.), 150-006-0971 (Setco Automotive Na Inc).
6 possible matches (shared part number, not a government interchangeability claim): 2530-00-737-3895, 5330-00-969-1770, 5910-01-115-5143. Verify interchangeability with system specifications before substitution.
Key specifications for 4-31122: Spline Type: STRAIGHT; Spline Major Diameter: 1.756 INCHES MINIMUM AND 1.762 INCHES MAXIMUM IN. 2 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.