The Pump,rotary, cataloged under National Stock Number 4320-01-159-0756, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Kalmar AC Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-159-0756 |
| Primary Part Number | 8623988-6 |
| Item Name | Pump,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Kalmar AC Inc |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Intake Connection Type | THREADED INTERNAL |
| Pumping Element Operating Position | HORIZONTAL |
| Drive Shaft Length | 0.962 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity | 3500.0 REVOLUTIONS PER MINUTE |
| Discharge Connection Thread Size and Series/type Designator | 0.875-14 UNF |
| Drive Shaft Type | SPLINED, INVOLUTE EXTERNAL |
| Intake Connection Thread Size and Series/type Designator | 1.062-12 UNF |
| Discharge Pressure | 000.0 ENERGY EFFICIENT - FEMP - LOW STANDBY POWER - OFFICE EQUIPMENT -INTEGRATED COMPUTERS |
| Maximum Discharge Flow Rate | 4.24 GALLONS PER MINUTE |
| Rotary Pump Design | GEAR |
| Discharge Connection Type | THREADED INTERNAL |
| Intake Connection Quantity | 1 |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Pump Rotation Direction | CLOCKWISE |
| Operation Method | POWERED |
| 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 |
|---|---|
| 8623988-6 PRIMARY | Kalmar AC Inc (USA) |
| Reference | Meaning |
|---|---|
| 1P3020CSSJB | 5/2 Secondary reference U.S. Government activity |
NSN 4320-01-159-0756 is a Pump,rotary, manufactured by Kalmar AC Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-159-0756 has 1 manufacturer part number on file: 8623988-6 (Kalmar AC Inc).
1 possible match (shared part number, not a government interchangeability claim): 4930-01-492-9270. Verify interchangeability with system specifications before substitution.
Key specifications for 8623988-6: Discharge Connection Quantity: 1; Intake Connection Type: THREADED INTERNAL; Pumping Element Operating Position: HORIZONTAL; Drive Shaft Length: 0.962 INCHES NOMINAL IN. 16 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.