The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-01-143-9661, is classified within Federal Supply Class 4140 (No Item Name Available) of the Refrigeration, AC, and Air Circulating Equipment group. The primary manufacturer of record is Kurz & Root Generator Company, Llc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-143-9661 |
| Primary Part Number | 18998 |
| Item Name | Impeller,fan,centrifugal |
| FSC / FSG | 4140 / 41 — No Item Name Available |
| Manufacturer | Kurz & Root Generator Company, Llc |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Mounting Bolt Circle Diameter | 4.750 INCHES NOMINAL IN |
| Attachment Method | BOLT HOLE |
| Blade Quantity | 18 |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Material | ALUMINUM ALLOY OVERALL |
| Style Designator | CURVED BLADES SINGLE WIDTH |
| Mounting Hole Diameter | 0.562 INCHES NOMINAL IN |
| Diameter | 22.000 INCHES NOMINAL IN |
| Width | 3.500 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 18998 PRIMARY | Kurz & Root Generator Company, Llc (USA) |
NSN 4140-01-143-9661 is a Impeller,fan,centrifugal, manufactured by Kurz & Root Generator Company, Llc, classified under FSC 4140 (No Item Name Available). Status: active.
NSN 4140-01-143-9661 has 1 cross-referenced part number: 18998 (Kurz & Root Generator Company, Llc).
There are 3 known substitutes for 4140-01-143-9661: 5340-01-418-5699, 5306-01-542-1340, 4920-01-732-4440. Verify interchangeability with system specifications before substitution.
Key specifications for 18998: Mounting Hole Quantity: 4; Special Features: DESIGNED FOR CCW ROTATION DIRECTION; Mounting Bolt Circle Diameter: 4.750 INCHES NOMINAL IN; Attachment Method: BOLT HOLE. 11 total characteristics are documented in the Federal Logistics Information System.