The Fan,centrifugal, cataloged under National Stock Number 4140-01-552-0930, 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 Deere & Co. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-552-0930 |
| Primary Part Number | AT221322 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Deere & Co |
| Status | ACTIVE |
| Voltage in Volts and Current Type | 24.0 DC |
| 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 |
|---|---|
| AT221322 | Rdo Equipment Rdo Equipment Pty Ltd (AUS) |
| AT221322 | Rdo Equipment Pty Ltd (AUS) |
| AT221322 PRIMARY | Deere & Co (USA) |
| Reference | Meaning |
|---|---|
| AT221322 | 5/9 Secondary reference Hitachi Construction Machinery Aust Australia Pty Ltd Hitachi Construction Machinery |
| AT221322 | 5/9 Secondary reference Rdo Equipment Pty Ltd |
NSN 4140-01-552-0930 is a Fan,centrifugal, manufactured by Deere & Co, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-552-0930 has 3 manufacturer part numbers on file: AT221322 (Rdo Equipment Rdo Equipment Pty Ltd), AT221322 (Rdo Equipment Pty Ltd), AT221322 (Deere & Co).
Key specifications for AT221322: Voltage in Volts and Current Type: 24.0 DC; Part Name Assigned by Controlling Agency: BLOWER FAN 24VOLT; End Item Identification: 750J/850J CRAWLER DOZER. 1 specification is 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.