The Pump,axial Pistons, cataloged under National Stock Number 4320-01-340-1389, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Curtiss-Wright Flow Control Corporation Dba Enertech Div Curtiss-Wright Flow Control. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-340-1389 |
| Primary Part Number | 42593-003 |
| Item Name | Pump,axial Pistons |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Flow Control Corporation Dba Enertech Div Curtiss-Wright Flow Control |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Pumping Element Type | PISTON |
| Intake Connection Type | THREADED INTERNAL |
| Pumping Element Operating Position | HORIZONTAL |
| Drive Shaft Length | 1.370 INCHES NOMINAL IN |
| Drive Connection Type | CLOSE COUPLED |
| Reciprocating Stroke Type | VARIABLE |
| Operating Speed at Rated Capacity | 2500.0 REVOLUTIONS PER MINUTE |
| Discharge Connection Thread Size and Series/type Designator | 1.063-12 PTF-SAE SHORT |
| Drive Shaft Type | KEY TYPE, EXTERNAL |
| Intake Connection Thread Size and Series/type Designator | 1.188-12 PTF-SAE SHORT |
| Volume Control Type | PRESSURE COMPENSATION |
| Discharge Pressure | 000.0 ENERGY EFFICIENT - FEMP - LOW STANDBY POWER - OFFICE EQUIPMENT -INTEGRATED COMPUTERS |
| Maximum Discharge Flow Rate | 11.1 GALLONS PER MINUTE |
| Drive Shaft End Diameter | 0.675 INCHES NOMINAL IN |
| Discharge Connection Type | THREADED INTERNAL |
| Intake Connection Quantity | 1 |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Pump Rotation Direction | CLOCKWISE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 42593-003 PRIMARY | Curtiss-Wright Flow Control Corporation Dba Enertech Div Curtiss-Wright Flow Control (USA) |
| Reference | Meaning |
|---|---|
| 70122-RAL | 5/9 Secondary reference Cessna Aircraft Co Arc Avionics Div |
NSN 4320-01-340-1389 is a Pump,axial Pistons, manufactured by Curtiss-Wright Flow Control Corporation Dba Enertech Div Curtiss-Wright Flow Control, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-340-1389 has 1 manufacturer part number on file: 42593-003 (Curtiss-Wright Flow Control Corporation Dba Enertech Div Curtiss-Wright Flow Control).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-562-7932. Verify interchangeability with system specifications before substitution.
Key specifications for 42593-003: Discharge Connection Quantity: 1; Pumping Element Type: PISTON; Intake Connection Type: THREADED INTERNAL; Pumping Element Operating Position: HORIZONTAL. 20 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.