The Fan,centrifugal, cataloged under National Stock Number 4140-01-485-1769, 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 Mechatronics, Inc. Div National Precision Bearing. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-485-1769 |
| Primary Part Number | F123H12B1-FSR |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Mechatronics, Inc. Div National Precision Bearing |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 4 FLANGE |
| Drive Type | DIRECT |
| Rotation Direction for Which Designed | CLOCKWISE |
| Air Flow Rate | 115.0 CUBIC FEET PER MINUTE NOMINAL |
| 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 |
|---|---|
| F123H12B1-FSR PRIMARY | Mechatronics, Inc. Div National Precision Bearing (USA) |
| Reference | Meaning |
|---|---|
| F1238H12B1-FS | 5/9 Secondary reference Mechatronics, Inc. Div National Precision Bearing |
NSN 4140-01-485-1769 is a Fan,centrifugal, manufactured by Mechatronics, Inc. Div National Precision Bearing, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-485-1769 has 1 manufacturer part number on file: F123H12B1-FSR (Mechatronics, Inc. Div National Precision Bearing).
Key specifications for F123H12B1-FSR: Mounting Facility Type and Quantity: 4 FLANGE; Drive Type: DIRECT; Special Features: INCLUDE TACHOMETER OR LOCKED ROTOR OUTPUT SIGNAL,AND THER; Rotation Direction for Which Designed: CLOCKWISE. 4 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.