The Pump,axial Pistons, cataloged under National Stock Number 4320-00-555-9641, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division. Government technical data includes 23 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-555-9641 |
| Primary Part Number | 23-2367 |
| Item Name | Pump,axial Pistons |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Pumping Element Type | PISTON |
| Intake Connection Type | THREADED INTERNAL |
| Pumping Element Operating Position | HORIZONTAL |
| Drive Shaft Length | 1.062 INCHES NOMINAL IN |
| Drive Connection Type | SPUR GEAR |
| Reciprocating Stroke Type | VARIABLE |
| Operating Speed at Rated Capacity | 3750.0 REVOLUTIONS PER MINUTE |
| Pump Reciprocating Design | SINGLE ACTING |
| Control Location | CENTER |
| Discharge Connection Thread Size and Series/type Designator | 1.062-12 UN |
| Drive Shaft Type | SPLINED, STRAIGHT EXTERNAL |
| Intake Connection Thread Size and Series/type Designator | 1.312-12 UN |
| Volume Control Type | HYDRAULIC CYLINDER |
| Discharge Pressure | 500.0 COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - CEMENT AND CONCRETE CONTAINING CENOSPHERES |
| Cylinder Quantity | 1 |
| Maximum Discharge Flow Rate | 6.0 GALLONS PER MINUTE |
| Drive Shaft End Diameter | 0.650 INCHES NOMINAL IN |
| Discharge Connection Type | THREADED INTERNAL |
| Intake Connection Quantity | 1 |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Pump Rotation Direction | COUNTERCLOCKWISE |
| Mounting Type | BASE |
| 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 |
|---|---|
| 23-2367 | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division (USA) |
| AP6V21B2 | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division (USA) |
| Reference | Meaning |
|---|---|
| 50229 | 3/2 Design control — primary reference U.S. Government activity |
| AP6V21B2 | 5/2 Secondary reference U.S. Government activity |
NSN 4320-00-555-9641 is a Pump,axial Pistons, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-555-9641 has 2 manufacturer part numbers on file: 23-2367 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division), AP6V21B2 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division).
3 possible matches (shared part number, not a government interchangeability claim): 6130-00-775-2987, 5995-01-255-9023, 5315-01-464-4660. Verify interchangeability with system specifications before substitution.
Key specifications for 23-2367: Discharge Connection Quantity: 1; Pumping Element Type: PISTON; Intake Connection Type: THREADED INTERNAL; Pumping Element Operating Position: HORIZONTAL. 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.
NSN 4320-00-555-9641 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.