The Motor,alternating Current, cataloged under National Stock Number 6105-01-357-9749, is classified within Federal Supply Class 6105 (Motors, Electrical) of the Electric Wire, Power, and Distribution Equipment group. The manufacturer of record is Mil Spec Inc Dba Mil Spec, Inc. Government technical data includes 25 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6105-01-357-9749 |
| Primary Part Number | MR1057 |
| Item Name | Motor,alternating Current |
| FSC / FSG | 6105 / 61 — Motors, Electrical |
| Manufacturer | Mil Spec Inc Dba Mil Spec, Inc |
| Status | ACTIVE |
| Keyway Depth | 0.250 INCHES NOMINAL SINGLE END IN |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| Duty Cycle | CONTINUOUS |
| Phase | THREE INPUT |
| Shaft Diameter | 1.1245 INCHES MINIMUM AND 1.1250 INCHES MAXIMUM SINGLE END IN |
| Frequency in Hertz | 60.0 INPUT |
| Shaft End Style | FLAT KEYWAY SINGLE END |
| Winding Type | INDUCTION-SQUIRREL CAGE |
| Mounting Method | FIXED BASE |
| Frame Size Designation | 182T |
| Criticality Code Justification | FEAT |
| Shaft Rotation Direction | COUNTERCLOCKWISE SINGLE END |
| Connection Type and Voltage Rating in Volts | 440.0 LINE TO NEUTRAL SINGLE INPUT |
| Keyway Length | 1.880 INCHES NOMINAL SINGLE END IN |
| Nominal Center to Center Distance Between Mounting Facilities Parallel to Length | 4.500 INCHES IN |
| Keyway Width | 0.250 INCHES NOMINAL SINGLE END IN |
| Nominal Center to Center Distance Between Mounting Facilities Parallel to Width | 7.500 INCHES IN |
| Length of Shaft From Housing | 9.500 INCHES SINGLE END IN |
| Current Rating in Amps | 2.500 SINGLE INPUT |
| Enclosure Feature | DRIPPROOF-15 DEG |
| Current Rating Method | LOAD |
| Power Rating | 1.500 HORSEPOWER OUTPUT |
| Terminal Type and Quantity | 3 SOLDERLESS LUG |
| Rotor Speed Rating in RPM | 1800.0 SINGLE FULL LOAD |
| Temp Rating | 50.0 AMBIENT CELSIUS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| MR1057 PRIMARY | Mil Spec Inc Dba Mil Spec, Inc (USA) |
| Reference | Meaning |
|---|---|
| 89D0005 ITEM 70 | 5/1 Secondary reference U.S. Government activity |
| D1-025439VM | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 89D0005 ITEM 70VM | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| D1-025439 | 3/1 Design control — primary reference Western Sky Industries Inc Dba Electromech Techologies |
NSN 6105-01-357-9749 is a Motor,alternating Current, manufactured by Mil Spec Inc Dba Mil Spec, Inc, classified under FSC 6105, Motors, Electrical. Status: active.
NSN 6105-01-357-9749 has 1 manufacturer part number on file: MR1057 (Mil Spec Inc Dba Mil Spec, Inc).
Key specifications for MR1057: Keyway Depth: 0.250 INCHES NOMINAL SINGLE END IN; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Duty Cycle: CONTINUOUS; Phase: THREE INPUT. 25 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.