The Piston,clutch, cataloged under National Stock Number 2520-01-255-4162, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Okanagan Laboratories Inc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Piston,clutch |
| FSC / FSG | 2520 — Vehicular Power Transmission Components (FSG 25) |
| Manufacturers | Okanagan Laboratories Inc (CAGE 2C034) |
| Parameter | Value |
|---|---|
| NSN | 2520-01-255-4162 |
| Primary Part Number | 4644 351 023 |
| Item Name | Piston,clutch |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Okanagan Laboratories Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| 4644 351 023 | Okanagan Laboratories Inc (CAN) |
| Reference | Meaning |
|---|---|
| 4644 351 070 | 3/9 Design control — primary reference Zf Group North American Operations, Inc. Dba Zf Services North America Div Sales and Service |
| 4644308464 | 5/9 Secondary reference Zf Friedrichshafen Ag |
| 4644 351 02 | 5/9 Secondary reference Zf Group North American Operations, Inc. Dba Zf Services North America Div Sales and Service |
| 4644308013 | 5/9 Secondary reference Zf Friedrichshafen Ag |
| 4644 308 464 | 5/9 Secondary reference Zf Group North American Operations, Inc. Dba Zf Services North America Div Sales and Service |
| 4644 308 013 | 5/9 Secondary reference Zf Group North American Operations, Inc. Dba Zf Services North America Div Sales and Service |
NSN 2520-01-255-4162 is a Piston,clutch, manufactured by Okanagan Laboratories Inc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-255-4162 has 1 manufacturer part number on file: 4644 351 023 (Okanagan Laboratories Inc).
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.