The Motor,hydraulic, cataloged under National Stock Number 4320-01-325-8256, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-325-8256 |
| Item Name | Motor,hydraulic |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Shaft Diameter | 1.000 INCHES NOMINAL IN |
| Constant Displacement Per Revolution | 4.500 CUBIC INCHES |
| Displacement Type | CONSTANT |
| Connection Design | THREADED |
| Torque Load Rating | 1173.0 INCH-POUNDS IN |
| Distance From End to Keyway Center | 0.710 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Shaft Protrusion Length | 1.930 INCHES MINIMUM AND 2.070 INCHES MAXIMUM IN |
| Connection Type | INLET AND OUTLET |
| Mounting Hole Diameter | 0.375 INCHES NOMINAL IN |
| Thread Location | INTERNAL |
| Shaft Rotation Direction | CLOCKWISE AND COUNTERCLOCKWISE |
| Sae Key Size Accommodated | 150 |
| Thread Direction | RIGHT-HAND |
| Drive Shaft Type | WOODRUFF KEYWAY |
| Mounting Bolt Circle Diameter | 3.250 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 685.0 |
| Thread Size | 0.875-14 |
| Screw Thread Series Designator | UNF |
| Connection Government Spec/std | AND10050-10 |
| Material | STEEL HOUSING |
| Connection Quantity | 2 |
| Mounting Type | FLANGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 103-1010 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4320-01-325-8256 is a Motor,hydraulic, classified under FSC 4320, Power and Hand Pumps. Status: active.
Key specifications for 4320-01-325-8256: Mounting Hole Quantity: 4; Shaft Diameter: 1.000 INCHES NOMINAL IN; Constant Displacement Per Revolution: 4.500 CUBIC INCHES; Displacement Type: CONSTANT. 23 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.