The Pump,axial Pistons, cataloged under National Stock Number 4320-00-970-6657, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Parker Hannifin Corporation Div Hydraulic Systems Division. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-970-6657 |
| Primary Part Number | 51029 |
| Item Name | Pump,axial Pistons |
| FSC / FSG | 4320 / 43 — No Item Name Available |
| Manufacturer | Parker Hannifin Corporation Div Hydraulic Systems Division |
| Status | ACTIVE |
| Maximum Discharge Flow Rate | 14.2 GALLONS PER MINUTE |
| Intake Connection Thread Size and Series/type Designator | 1.312-12 UN |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Control Location | CENTER |
| Operating Speed at Rated Capacity | 3750.0 REVOLUTIONS PER MINUTE |
| Pump Reciprocating Design | SINGLE ACTING |
| Intake Connection Type | THREADED INTERNAL |
| Pumping Element Operating Position | HORIZONTAL |
| Discharge Connection Type | THREADED INTERNAL |
| Discharge Connection Quantity | 1 |
| Drive Connection Type | CLOSE COUPLED |
| Reciprocating Stroke Type | VARIABLE |
| Discharge Connection Thread Size and Series/type Designator | 1.062-12 UN |
| Drive Shaft Length | 1.543 INCHES NOMINAL IN |
| Pump Rotation Direction | COUNTERCLOCKWISE |
| Pumping Element Type | PISTON |
| Discharge Pressure | 000.0 ENERGY EFFICIENT - FEMP - LOW STANDBY POWER - OFFICE EQUIPMENT -INTEGRATED COMPUTERS |
| Volume Control Type | PRESSURE COMPENSATION |
| Cylinder Quantity | 9 |
| Drive Shaft Type | SPLINED, INVOLUTE EXTERNAL |
| Intake Connection Quantity | 1 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 51029 PRIMARY | Parker Hannifin Corporation Div Hydraulic Systems Division (USA) |
| 128SCH166-1 | Northrop Grumman Systems Corporation (USA) |
| AP6VSC5 | Parker Hannifin Corporation Div Hydraulic Systems Division (USA) |
| 128SCH166-1 | Northrop Grumman Systems Corporation (USA) |
NSN 4320-00-970-6657 is a Pump,axial Pistons, manufactured by Parker Hannifin Corporation Div Hydraulic Systems Division, classified under FSC 4320 (No Item Name Available). Status: active.
NSN 4320-00-970-6657 has 4 cross-referenced part numbers: 51029 (Parker Hannifin Corporation Div Hydraulic Systems Division), 128SCH166-1 (Northrop Grumman Systems Corporation), AP6VSC5 (Parker Hannifin Corporation Div Hydraulic Systems Division), 128SCH166-1 (Northrop Grumman Systems Corporation).
There are 7 known substitutes for 4320-00-970-6657: 5935-00-166-5611, 5133-00-236-4102, 2940-00-378-9729 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 51029: Maximum Discharge Flow Rate: 14.2 GALLONS PER MINUTE; Intake Connection Thread Size and Series/type Designator: 1.312-12 UN; Media for Which Designed: HYDROCARBON FUELS AND OILS; Control Location: CENTER. 21 total characteristics are documented in the Federal Logistics Information System.