The Motor,hydraulic, cataloged under National Stock Number 4320-01-182-7551, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-182-7551 |
| Primary Part Number | 12330571 |
| Item Name | Motor,hydraulic |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Shaft Diameter | 1.000 INCHES NOMINAL IN |
| Constant Displacement Per Revolution | 7.100 CUBIC INCHES |
| Key Width | 0.250 INCHES NOMINAL IN |
| Displacement Type | CONSTANT |
| Connection Design | THREADED |
| Torque Load Rating | 2989.0 INCH-POUNDS IN |
| Connection Type | OUTLET AND DRAIN |
| Thread Location | INTERNAL |
| Shaft Rotation Direction | CLOCKWISE |
| Thread Direction | RIGHT-HAND |
| Drive Shaft Type | KEYED |
| Key Height | 0.115 INCHES NOMINAL IN |
| Maximum Working Pressure Rating at Specified Temp Range | 3000.0PSI CONTINUOUS AND 3500.0PSI INTERMITTENT AT A KNOWN TEMPERATURE |
| Key Length | 1.000 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 541.0 |
| Thread Size | 7/8-14 AND 7/16-20 |
| Screw Thread Series Designator | UNF |
| Connection Quantity | 1 |
| Mounting Type | FLANGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 110-3-FS-O | Parker-Hannifin Corp Div Hydraulic Pump/motor Division (USA) |
| 12330571 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| BML42872 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 110-3-FS-O | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division |
| MODEL100-2-F5-1 | 5/9 Secondary reference Invar Mfg Ltd |
NSN 4320-01-182-7551 is a Motor,hydraulic, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-182-7551 has 2 manufacturer part numbers on file: 110-3-FS-O (Parker-Hannifin Corp Div Hydraulic Pump/motor Division), 12330571 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12330571: Shaft Diameter: 1.000 INCHES NOMINAL IN; Constant Displacement Per Revolution: 7.100 CUBIC INCHES; Key Width: 0.250 INCHES NOMINAL IN; Displacement Type: CONSTANT. 19 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.
NSN 4320-01-182-7551 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.