The Pump Unit,centrifugal, cataloged under National Stock Number 4320-01-014-8166, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Little Giant Pump Co. Government technical data includes 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-014-8166 |
| Primary Part Number | 503003 |
| Item Name | Pump Unit,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Little Giant Pump Co |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Phase | SINGLE |
| Intake Connection Type | THREADED INTERNAL |
| Frequency in Hertz | 60.0 |
| Inclosure Type | FULLY INCLOSED |
| Current Type | AC |
| Centrifugal Pump Impeller Quantity | 2 |
| Voltage in Volts | 115.0 |
| Prime Mover Quantity | 1 |
| Centrifugal Pump Impeller Suction Type | SINGLE |
| Pump Quantity | 1 |
| Features Provided | SELF-PRIMING |
| Discharge Connection Thread Size and Series/type Designator | 0.500-14 NPT |
| Intake Connection Thread Size and Series/type Designator | 0.500-14 NPT |
| Stage Quantity | 1 |
| Environmental Protection | SUBMERSIBLE |
| Maximum Discharge Flow Rate | 8.8 GALLONS PER MINUTE |
| Discharge Connection Type | THREADED EXTERNAL |
| Intake Connection Quantity | 1 |
| Prime Mover Type | ELECTRIC MOTOR |
| Media for Which Designed | AIR |
| Operation Relationship Design | SIMULTANEOUS |
| Centrifugal Pump Design | RADIAL FLOW |
| Total Head | 1.000 FEET FT |
| Current Rating in Amps | 3.2 |
| 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 |
|---|---|
| 3E-12R | Little Giant Pump Co (USA) |
| 503003 PRIMARY | Little Giant Pump Co (USA) |
| Reference | Meaning |
|---|---|
| 124-3010-002 | 5/9 Secondary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
NSN 4320-01-014-8166 is a Pump Unit,centrifugal, manufactured by Little Giant Pump Co, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-014-8166 has 2 manufacturer part numbers on file: 3E-12R (Little Giant Pump Co), 503003 (Little Giant Pump Co).
1 possible match (shared part number, not a government interchangeability claim): 5315-01-326-1275. Verify interchangeability with system specifications before substitution.
Key specifications for 503003: Discharge Connection Quantity: 1; Phase: SINGLE; Intake Connection Type: THREADED INTERNAL; Frequency in Hertz: 60.0. 25 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.