The Piston,clutch Shaft Assembly, cataloged under National Stock Number 2520-01-503-0703, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Piston,clutch Shaft Assembly |
| FSC / FSG | 2520 — Vehicular Power Transmission Components (FSG 25) |
| Manufacturers | Oshkosh Defense Llc (CAGE 75Q65); Daimler Truck North America Llc (CAGE 64678); Allison Transmission Inc Dba Allison Transmission, Inc (CAGE 73342) |
| Parameter | Value |
|---|---|
| NSN | 2520-01-503-0703 |
| Primary Part Number | 29542536 |
| Item Name | Piston,clutch Shaft Assembly |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 5HA271 | Oshkosh Defense Llc (USA) |
| 29542536 | Daimler Truck North America Llc (USA) |
| 29542536 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 25KP609 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 5HA271 | 5/9 Secondary reference Oshkosh Corp |
| 29534577 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 2520-01-503-0703 is a Piston,clutch Shaft Assembly, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-503-0703 has 4 manufacturer part numbers on file: 5HA271 (Oshkosh Defense Llc), 29542536 (Daimler Truck North America Llc), 29542536 (Allison Transmission Inc Dba Allison Transmission, Inc), 25KP609 (Oshkosh Defense Llc).
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.