The Fan,centrifugal, cataloged under National Stock Number 4140-01-516-5710, 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 23 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4140-01-516-5710 |
| Primary Part Number | F1238S12B1-FS |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Mechatronics, Inc. Div National Precision Bearing |
| Status | ACTIVE |
| Outlet Location | CENTER |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| Speed Adjustments | SINGLE SPEED |
| Inclosure Type | PARTIALLY INCLOSED |
| Length | 1.500 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 12.0 DC |
| Housing Inside Diameter | 4.130 INCHES NOMINAL IN |
| Drive Type | DIRECT |
| Prime Mover Power Rating | 30.0 WATTS |
| Features Provided | SAFETY IMPELLER GUARD |
| Ambient Temp at Full Rated Power | -85.0 FAHRENHEIT AND 185.0 FAHRENHEIT DEGF |
| Discharge Direction | HORIZONTAL |
| Height | 4.690 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 1800.0 |
| Environmental Protection | VIBRATION PROOF AND WEATHERPROOF |
| Width | 4.690 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY OR STEEL CORROSION RESISTING OVERALL |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | CLOCKWISE |
| Prime Mover Drive Shaft Bearing Type | BALL |
| Electrical Connection Type | CONNECTOR PLUG |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 83.0 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 |
|---|---|
| F1238S12B1-FS | Mechatronics, Inc. Div National Precision Bearing (USA) |
| F1238S12B1 | Mechatronics, Inc. Div National Precision Bearing (USA) |
| Reference | Meaning |
|---|---|
| 060-1135-000-00 | 3/9 Design control — primary reference Tracewell Enclosures Inc |
| 060-1135-000-00 | C/1 Advisory reference — outside the item-of-supply concept Tracewell Systems, Inc. |
NSN 4140-01-516-5710 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 4140-01-516-5710 has 2 manufacturer part numbers on file: F1238S12B1-FS (Mechatronics, Inc. Div National Precision Bearing), F1238S12B1 (Mechatronics, Inc. Div National Precision Bearing).
Key specifications for F1238S12B1-FS: Outlet Location: CENTER; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Speed Adjustments: SINGLE SPEED; Inclosure Type: PARTIALLY INCLOSED. 23 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.