The Housing,mechanical Drive, cataloged under National Stock Number 2520-01-657-1539, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-01-657-1539 |
| Item Name | Housing,mechanical Drive |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Status | ACTIVE |
| Color | BLACK |
| Construction Type | MULTIPLE PIECE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 8M0117253 | 3/2 Design control — primary reference U.S. Government activity |
| 8M0078247 | 3/9 Design control — primary reference U.S. Government activity |
NSN 2520-01-657-1539 is a Housing,mechanical Drive, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
Key specifications for 2520-01-657-1539: Color: BLACK; Part Name Assigned by Controlling Agency: GEAR HOUSING ASSEMBLY; End Item Identification: PROP UNIT, OUTBOARD; Construction Type: MULTIPLE PIECE. 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.