The Control Assembly,transmission, cataloged under National Stock Number 2520-01-684-1839, 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. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-01-684-1839 |
| Primary Part Number | A5900 J4R |
| Item Name | Control Assembly,transmission |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Component Document Origin | INDUSTRIAL |
| Vehicle Identification Designator | LIGHT ARMORED VEHICLE |
| Vehicle Design Control Activity | 73342 |
| 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 |
|---|---|
| A5900 J4R PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
NSN 2520-01-684-1839 is a Control Assembly,transmission, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-684-1839 has 1 manufacturer part number on file: A5900 J4R (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for A5900 J4R: Component Document Origin: INDUSTRIAL; Vehicle Identification Designator: LIGHT ARMORED VEHICLE; Vehicle Design Control Activity: 73342; Part Name Assigned by Controlling Agency: TRANSMISSION, MECHANICAL. 3 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.