The Impeller,fan,axial, cataloged under National Stock Number 4140-01-101-8644, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-101-8644 |
| Primary Part Number | 65020BX |
| Item Name | Impeller,fan,axial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Style Designator | ROUNDED TIP |
| Attachment Method | BOLT HOLE |
| Mounting Hole Diameter | 0.530 INCHES NOMINAL IN |
| Diameter | 39.910 INCHES MINIMUM AND 40.090 INCHES MAXIMUM IN |
| Blade Quantity | 8 |
| Mounting Bolt Circle Diameter | 4.500 INCHES NOMINAL IN |
| Hub Location | BACK |
| Material | STEEL COMP 1010 BLADE |
| 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 |
|---|---|
| 65020BX PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 65020BX | 5/9 Secondary reference Oshkosh Corp |
| 480356 | 5/9 Secondary reference Brookside Corp |
| 4140011018644 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 65020-B | 5/9 Secondary reference Oshkosh Corp |
NSN 4140-01-101-8644 is a Impeller,fan,axial, manufactured by Oshkosh Defense Llc, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-101-8644 has 1 manufacturer part number on file: 65020BX (Oshkosh Defense Llc).
Key specifications for 65020BX: Mounting Hole Quantity: 4; Style Designator: ROUNDED TIP; Attachment Method: BOLT HOLE; Mounting Hole Diameter: 0.530 INCHES NOMINAL IN. 9 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.