The Impeller,fan,axial, cataloged under National Stock Number 4140-01-701-9437, 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 Cospolich Inc.. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4140-01-701-9437 |
| Primary Part Number | RWFB50 |
| Item Name | Impeller,fan,axial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Cospolich Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| RWFB50 PRIMARY | Cospolich Inc. (USA) |
| Reference | Meaning |
|---|---|
| 50475 | D/9 Drawing number reference only Cospolich Inc. |
| 50475 REV D ITEM 14 | C/1 Advisory reference — outside the item-of-supply concept Cospolich Inc. |
NSN 4140-01-701-9437 is a Impeller,fan,axial, manufactured by Cospolich Inc., classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-701-9437 has 1 manufacturer part number on file: RWFB50 (Cospolich Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 4130-01-705-6800, 4130-01-705-8722. Verify interchangeability with system specifications before substitution.
Key specifications for RWFB50: Part Name Assigned by Controlling Agency: CONDENSER FAN BLADE; End Item Identification: MODULAR REFRIGERATOR R10-2M-SNL-MLR. 0 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.