The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-00-684-0447, 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 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-684-0447 |
| Primary Part Number | 918733-03 |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Keyway Type | STRAIGHT |
| Keyway Depth | 0.203 INCHES NOMINAL IN |
| Hub Bore Diameter | 1.8750 INCHES MINIMUM AND 1.8755 INCHES MAXIMUM IN |
| Hub Length | 3.812 INCHES NOMINAL IN |
| Design Type | SINGLE WIDTH |
| Overall Diameter | 17.375 INCHES NOMINAL IN |
| Mounting Method | KEY |
| Keyway Quantity | 1 |
| Blade Quantity | 3 |
| Keyway Length | 3.812 INCHES NOMINAL IN |
| Hub Quantity | 1 |
| Hub Location | SINGLE INSIDE OFFSET |
| Keyway Width | 0.375 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN |
| Material | STEEL |
| Rotation Direction for Which Designed | CLOCKWISE |
| Blade Type | FORWARD CURVE |
| 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 |
|---|---|
| RW118733 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 17075P | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 918733-03 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| RW118733 | 5/9 Secondary reference U.S. Government activity |
| 17075P | 5/9 Secondary reference U.S. Government activity |
| 918733-03 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4320-00-684-0447 is a Impeller,pump,centrifugal, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-684-0447 has 3 manufacturer part numbers on file: RW118733 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 17075P (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 918733-03 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 918733-03: Keyway Type: STRAIGHT; Keyway Depth: 0.203 INCHES NOMINAL IN; Hub Bore Diameter: 1.8750 INCHES MINIMUM AND 1.8755 INCHES MAXIMUM IN; Hub Length: 3.812 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.