The Motor,hydraulic, cataloged under National Stock Number 4320-01-051-8570, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-051-8570 |
| Primary Part Number | 25S |
| Item Name | Motor,hydraulic |
| FSC / FSG | 4320 / 43 — No Item Name Available |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Mounting Type | FLANGE |
| Mounting Hole Quantity | 4 |
| Displacement Type | CONSTANT |
| Mounting Bolt Circle Diameter | 6.500 INCHES NOMINAL IN |
| Shaft Rotation Direction | CLOCKWISE |
| Accessory Components and Quantity | TACHOMETER TAKEOFF PIN 1 |
| Connection Type | OUTLET |
| Keyway Width | 0.188 INCHES NOMINAL IN |
| Constant Displacement Per Revolution | 2.500 CUBIC INCHES |
| Maximum Working Pressure Rating at Specified Temp Range | 2000 PSI AT MINUS 40 DEG F TO PLUS 160 DEG F DEGF |
| Shaft Diameter | 0.875 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.406 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 1500.0 |
| Keyway Depth | 0.094 INCHES NOMINAL IN |
| Connection Quantity | 3 |
| Connection Type | INLET |
| Thread Location | INTERNAL |
| Connection Type | DRAIN |
| Screw Thread Series Designator | UNF |
| Thread Direction | RIGHT-HAND |
| Torque Load Rating | 794.0 INCH-POUNDS IN |
| Keyway Length | 1.688 INCHES NOMINAL IN |
| Shaft Protrusion Length | 2.000 INCHES NOMINAL IN |
| Connection Design | THREADED |
| Thread Size | 0.375-24 |
| Drive Shaft Type | MACHINE KEYWAY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4320-01-051-8570 is a Motor,hydraulic, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 4320 (No Item Name Available). Status: active.
NSN 4320-01-051-8570 has 2 cross-referenced part numbers: 25S (Washington Scientific Industries Inc), 25S (Lockheed Martin Corporation Div Rms).
There are 12 known substitutes for 4320-01-051-8570: 6220-00-056-6751, 6750-00-286-2690, 5120-00-293-3006 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 25S: Mounting Type: FLANGE; Mounting Hole Quantity: 4; Displacement Type: CONSTANT; Mounting Bolt Circle Diameter: 6.500 INCHES NOMINAL IN. 26 total characteristics are documented in the Federal Logistics Information System.