The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-493-6902, 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 6 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-493-6902 |
| Primary Part Number | 989892-07 |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Overall Diameter | 8.220 INCHES NOMINAL IN |
| Mounting Method | KEY |
| Blade Quantity | 11 |
| Surface Treatment | ANODIZE |
| Material | TITANIUM ALLOY |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| 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 |
|---|---|
| RW-189940 ITEM 3.1B | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| RY-189779 ITEM 3.1B | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 989892-07 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| RW-189940 ITEM 3.1B | 5/9 Secondary reference U.S. Government activity |
| 989892-07 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 989892-07 | 3/9 Design control — primary reference U.S. Government activity |
| RY-189779 ITEM 3.1B | 5/9 Secondary reference U.S. Government activity |
NSN 4320-01-493-6902 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 4320-01-493-6902 has 3 manufacturer part numbers on file: RW-189940 ITEM 3.1B (Curtiss-Wright Electro-Mechanical Corporation Div Epd), RY-189779 ITEM 3.1B (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 989892-07 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 989892-07: Overall Diameter: 8.220 INCHES NOMINAL IN; Mounting Method: KEY; Blade Quantity: 11; Special Features: HARD ANNODIZED IN FINISHED CONDITION PER WURTHINGTON PUMP PROCEDURE NO. E-226824; KEY SUPPLIED BY MANUFACTURER; MATERIAL IS TITANIUM ALLOY 6AL-4V PER ASTM B-367 GR C-5 V. 6 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.