The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-00-977-2808, 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 17 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-977-2808 |
| Primary Part Number | 212505 |
| 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 | 0.094 INCHES NOMINAL IN |
| Hub Bore Diameter | 2.375 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN |
| Hub Length | 0.813 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Design Type | SINGLE WIDTH |
| Overall Diameter | 8.000 INCHES MINIMUM AND 8.250 INCHES MAXIMUM IN |
| Mounting Method | KEY |
| Keyway Quantity | 1 |
| Blade Quantity | 5 |
| Keyway Length | 1.375 INCHES NOMINAL IN |
| Hub Quantity | 2 |
| Hub Location | BACK SIDE AND FRONT SIDE |
| Keyway Width | 0.188 INCHES NOMINAL IN |
| Surface Treatment | CHROMIUM |
| Material | STEEL |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Blade Type | BACKWARD 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 |
|---|---|
| 1C-2273PC6 | Toolex, Inc Dba Toolex Inc (USA) |
| 212505 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 1C-2273PC6 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 212505 | Toolex, Inc Dba Toolex Inc (USA) |
| Reference | Meaning |
|---|---|
| 1C-2273 | D/9 Drawing number reference only Curtiss-Wright Electro-Mechanical Corporation Div Epd |
NSN 4320-00-977-2808 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 4320-00-977-2808 has 4 manufacturer part numbers on file: 1C-2273PC6 (Toolex, Inc Dba Toolex Inc), 212505 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 1C-2273PC6 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 212505 (Toolex, Inc Dba Toolex Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4320-01-248-5179, 3040-01-303-6407. Verify interchangeability with system specifications before substitution.
Key specifications for 212505: Keyway Type: STRAIGHT; Keyway Depth: 0.094 INCHES NOMINAL IN; Hub Bore Diameter: 2.375 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN; Hub Length: 0.813 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN. 17 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.