The Pump Unit,rotary, cataloged under National Stock Number 4320-00-368-3263, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-368-3263 |
| Primary Part Number | SL6557 |
| Item Name | Pump Unit,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Phase | THREE |
| Intake Connection Type | ROUND FLANGE |
| Frequency in Hertz | 60.0 |
| Inclosure Type | FULLY INCLOSED |
| Current Type | AC |
| Pumping Element Operating Position | VERTICAL |
| Prime Mover Power Rating | 20.000 HORSEPOWER |
| Voltage in Volts | 440.0 |
| Cooling Method | SELF VENTILATED |
| Prime Mover Quantity | 1 |
| Operating Speed at Rated Capacity | 325.0 REVOLUTIONS PER MINUTE |
| Pump Quantity | 1 |
| Prime Mover Cooling Medium | AIR |
| Discharge Pressure | 0.0 COMPREHENSIVE PROCUREMENT GUIDELINE - VEHICULAR PRODUCTS - REBUILT VEHICULAR PARTS |
| Environmental Protection | SPLASHTIGHT |
| Maximum Discharge Flow Rate | 225.0 GALLONS PER MINUTE |
| Rotary Pump Design | GEAR |
| Discharge Connection Type | ROUND FLANGE |
| Intake Connection Quantity | 1 |
| Prime Mover Type | ELECTRIC MOTOR |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Mounting Type | BASE |
| Total Head | 115.400 FEET FT |
| Current Rating in Amps | 26.0 |
| 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 |
|---|---|
| SL6557 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| SL6557 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4320-00-368-3263 is a Pump Unit,rotary, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-368-3263 has 1 manufacturer part number on file: SL6557 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for SL6557: Discharge Connection Quantity: 1; Phase: THREE; Intake Connection Type: ROUND FLANGE; 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.