The Pump Unit,centrifugal, cataloged under National Stock Number 4320-01-147-7683, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is March Manufacturing, Inc. Government technical data includes 24 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-147-7683 |
| Primary Part Number | 1A-MD-1/2 115V |
| Item Name | Pump Unit,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | March Manufacturing, Inc |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Phase | SINGLE |
| Intake Connection Type | UNTHREADED EXTERNAL |
| Frequency in Hertz | 60.0 |
| Inclosure Type | OPEN |
| Current Type | AC |
| Prime Mover Power Rating | 0.005 HORSEPOWER |
| Centrifugal Pump Impeller Quantity | 1 |
| Voltage in Volts | 115.0 |
| Cooling Method | WATER COOLED |
| Prime Mover Quantity | 1 |
| Centrifugal Pump Impeller Suction Type | SINGLE |
| Pump Quantity | 1 |
| Prime Mover Cooling Medium | AIR |
| Stage Quantity | 1 |
| Discharge Pressure | .7 COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - CEMENT AND CONCRETE CONTAINING SILICA FUME |
| Environmental Protection | SUBMERSIBLE |
| Discharge Connection Type | UNTHREADED EXTERNAL |
| Intake Connection Quantity | 1 |
| Prime Mover Type | ELECTRIC MOTOR |
| Media for Which Designed | LIQUID |
| Centrifugal Pump Design | MIXED FLOW |
| Total Head | 5.300 FEET FT |
| Current Rating in Amps | 0.45 |
| 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 |
|---|---|
| 1A-MD-1/2 115V PRIMARY | March Manufacturing, Inc (USA) |
| Reference | Meaning |
|---|---|
| 973-001-01 | 5/9 Secondary reference March Manufacturing, Inc |
| 973-001-01 | 5/9 Secondary reference Aerodyne Products Corp |
NSN 4320-01-147-7683 is a Pump Unit,centrifugal, manufactured by March Manufacturing, Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-147-7683 has 1 manufacturer part number on file: 1A-MD-1/2 115V (March Manufacturing, Inc).
Key specifications for 1A-MD-1/2 115V: Discharge Connection Quantity: 1; Phase: SINGLE; Intake Connection Type: UNTHREADED EXTERNAL; Frequency in Hertz: 60.0. 24 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.