The Piston,clutch, cataloged under National Stock Number 2520-01-021-4959, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-01-021-4959 |
| Item Name | Piston,clutch |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM;4.562 IN. OD;2.300 IN. ID;0.750 IN. H;1 GROOVE IN |
| 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 |
|---|---|
| 994348 | 5/9 Secondary reference Clark Equipment Co |
| 994348 | 5/2 Secondary reference U.S. Government activity |
| D1AZ-7A262-A | C/1 Advisory reference — outside the item-of-supply concept Ford Motor Company |
| D1AZ-7A262-A | 3/9 Design control — primary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
NSN 2520-01-021-4959 is a Piston,clutch, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
Key specifications for 2520-01-021-4959: General Characteristics Item Description: ALUMINUM;4.562 IN. OD;2.300 IN. ID;0.750 IN. H;1 GROOVE 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.