The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-00-233-7822, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Armstrong Pumps Inc. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4320-00-233-7822 |
| Primary Part Number | 816302-047 |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Armstrong Pumps Inc |
| Status | ACTIVE |
| Keyway Type | RECTANGULAR |
| Keyway Depth | 0.046 INCHES NOMINAL IN |
| Hub Bore Diameter | 1.431 INCHES NOMINAL AND 3.187 INCHES NOMINAL IN |
| Hub Length | 0.625 INCHES NOMINAL AND 0.500 INCHES NOMINAL IN |
| Design Type | SINGLE WIDTH |
| Overall Diameter | 5.250 INCHES NOMINAL IN |
| Mounting Method | KEY |
| Keyway Quantity | 1 |
| Hub Projection Length Beyond Wheel Side | 1.437 INCHES NOMINAL AND 0.500 INCHES NOMINAL IN |
| Blade Quantity | 5 |
| Keyway Length | 0.750 INCHES NOMINAL IN |
| Hub Quantity | 2 |
| Hub Location | BACK SIDE AND FRONT SIDE |
| Keyway Width | 0.093 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Rotation Direction for Which Designed | CLOCKWISE |
| 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 |
|---|---|
| 816302-047 PRIMARY | Armstrong Pumps Inc (USA) |
| Reference | Meaning |
|---|---|
| 186359 | 5/9 Secondary reference Itt Bell and Gosset-Hydronics a Unit of Itt Fluid Handling Div |
| PWB13Z335-3-375 | 5/9 Secondary reference Itt Bell and Gosset-Hydronics a Unit of Itt Fluid Handling Div |
NSN 4320-00-233-7822 is a Impeller,pump,centrifugal, manufactured by Armstrong Pumps Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-233-7822 has 1 manufacturer part number on file: 816302-047 (Armstrong Pumps Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5365-00-579-5167, 9905-01-130-5488. Verify interchangeability with system specifications before substitution.
Key specifications for 816302-047: Keyway Type: RECTANGULAR; Keyway Depth: 0.046 INCHES NOMINAL IN; Hub Bore Diameter: 1.431 INCHES NOMINAL AND 3.187 INCHES NOMINAL IN; Hub Length: 0.625 INCHES NOMINAL AND 0.500 INCHES NOMINAL 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.