The Cooler,fluid,transmission, cataloged under National Stock Number 2520-01-491-9198, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Meggitt Troy Inc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-01-491-9198 |
| Primary Part Number | 3-1261C |
| Item Name | Cooler,fluid,transmission |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Meggitt Troy Inc |
| Status | ACTIVE |
| Heat Transfer Method | INDIRECT |
| Length | 23.1500 INCHES NOMINAL IN |
| Oil Flow Rate | 45.6 LITERS PER MINUTE |
| Style Designator | STRAIGHT PLAIN TUBE CYLINDRICAL |
| Diameter | 3.7500 INCHES NOMINAL IN |
| Material | COPPER AND STEEL OVERALL |
| 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 |
|---|---|
| 12422174 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 3-1261C PRIMARY | Meggitt Troy Inc (USA) |
| Reference | Meaning |
|---|---|
| 3-1261C | 5/9 Secondary reference Rocore Thermal Systems |
| 3-1261C | 5/9 Secondary reference Stewart Warner South Wind Corp |
| 12422174 | 5/9 Secondary reference Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc |
| 3-1261C | 5/9 Secondary reference Rocore Thermal Systems, Llc |
NSN 2520-01-491-9198 is a Cooler,fluid,transmission, manufactured by Meggitt Troy Inc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-491-9198 has 2 manufacturer part numbers on file: 12422174 (U S Army Tank Automotive Command Amsta-Im-Mm), 3-1261C (Meggitt Troy Inc).
Key specifications for 3-1261C: Heat Transfer Method: INDIRECT; Length: 23.1500 INCHES NOMINAL IN; Oil Flow Rate: 45.6 LITERS PER MINUTE; Style Designator: STRAIGHT PLAIN TUBE CYLINDRICAL. 6 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.