The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-00-601-9890, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Armstrong Pumps Inc. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-601-9890 |
| Primary Part Number | 816556-041 |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — No Item Name Available |
| Manufacturer | Armstrong Pumps Inc |
| Status | ACTIVE |
| Hub Location | BACK SIDE AND FRONT SIDE |
| Mounting Method | KEY |
| Keyway Depth | 0.063 INCHES NOMINAL IN |
| Keyway Quantity | 1 |
| Hub Length | 0.250 INCHES NOMINAL IN |
| Keyway Width | 0.125 INCHES NOMINAL IN |
| Overall Diameter | 3.313 INCHES NOMINAL IN |
| Hub Bore Diameter | 1.375 INCHES NOMINAL IN |
| Hub Quantity | 2 |
| Blade Type | BACKWARD CURVE |
| Keyway Length | 0.813 INCHES NOMINAL IN |
| Keyway Type | RECTANGULAR |
| Hub Projection Length Beyond Wheel Side | 0.625 INCHES NOMINAL IN |
| Design Type | SINGLE WIDTH |
| Blade Quantity | 8 |
| Material | COPPER ALLOY |
| Rotation Direction for Which Designed | CLOCKWISE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 118436 | Itt Bell and Gosset-Hydronics a Unit of Itt Fluid Handling Div (USA) |
| 816556-041 PRIMARY | Armstrong Pumps Inc (USA) |
| 16556-41 | Armstrong Pumps Inc (USA) |
| D107PC12 | Way Wolff Associates Inc (USA) |
| PB2Z835 | Itt Bell and Gosset-Hydronics a Unit of Itt Fluid Handling Div (USA) |
NSN 4320-00-601-9890 is a Impeller,pump,centrifugal, manufactured by Armstrong Pumps Inc, classified under FSC 4320 (No Item Name Available). Status: active.
NSN 4320-00-601-9890 has 5 cross-referenced part numbers: 118436 (Itt Bell and Gosset-Hydronics a Unit of Itt Fluid Handling Div), 816556-041 (Armstrong Pumps Inc), 16556-41 (Armstrong Pumps Inc), D107PC12 (Way Wolff Associates Inc), PB2Z835 (Itt Bell and Gosset-Hydronics a Unit of Itt Fluid Handling Div).
There is 1 known substitute for 4320-00-601-9890: 5136-00-580-7316. Verify interchangeability with system specifications before substitution.
Key specifications for 816556-041: Hub Location: BACK SIDE AND FRONT SIDE; Mounting Method: KEY; Keyway Depth: 0.063 INCHES NOMINAL IN; Keyway Quantity: 1. 19 total characteristics are documented in the Federal Logistics Information System.