Shop 400 Series Keyed Couplings Keyed Couplings
Couplings are used to "couple" a pump and motor or engine together. One coupling half slips over the shaft of your engine or motor, one coupling half
slips over the shaft of your pump, and the flexible insert goes in between to mate the two halves together. The higher the series of your coupling, the more robust the coupling. The close machining tolerances of these couplings assures vibration-free operation and easy, accurate alignment without need for special tools.
Magnaloy Coupling Hub part numbers may be specified using the following format: Start with letter “M” designating Magnaloy, followed by 3 digit
Model Code (100, 200, etc.), then the specific 5 digit Bore/Key Code. All standard combinations of each series are shown below.
Coupling Type:
Material:
Bore Sizes:
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Series 400 Keyed Flexible Insert Coupling Halves
Click on the model number in the chart below to view that item.
| Product SKU | Model | Coupling Series | Coupling Type | Bore Size | Key Size | Lead Time | Price |
|---|---|---|---|---|---|---|---|
| M40012414 | 400 1-3/4BX7/16K : Magnaloy 400 HUB 1-3/4" BORE X 7/16" KEY | 400 | Keyed | 1.75 (1-3/4") | 0.4375 (7/16") | Same Day | $44.99 |
| M400124N | 400 1-3/4BXNOK : Magnaloy 400 HUB 1-3/4" BORE X NO KEY | 400 | Keyed | 1.75 (1-3/4") | NONE | 1-3 Days | $59.99 |
| M40011216S | 400 1-3/8BX1/2K : Magnaloy 400 HUB 1-3/8" BORE X 1/2" KEY SPECIAL | 400 | Keyed | 1.375 (1-3/8") | 0.5 (1/2") | 1-3 Days | $59.99 |
| M40011208S | 400 1-3/8BX1/4K : Magnaloy 400 HUB 1-3/8" BORE X 1/4" KEY SPECIAL | 400 | Keyed | 1.375 (1-3/8") | 0.25 (1/4") | 1-3 Days | $59.99 |
| M40011206S | 400 1-3/8BX3/16K : Magnaloy 400 HUB 1-3/8" BORE X 3/16" KEY SPECIAL | 400 | Keyed | 1.375 (1-3/8") | 0.1875 (3/16") | 1-3 Days | $59.99 |
| M40011212SC | 400 1-3/8BX3/8K : Magnaloy 400 HUB 1-3/8" BORE X 3/8" KEY SPECIAL W/CLAMP | 400 | Keyed | 1.375 (1-3/8") | 0.375 (3/8") | 1-3 Days | $90.99 |
| M40011212S | 400 1-3/8BX3/8K : Magnaloy 400 HUB 1-3/8" BORE X 3/8" KEY SPECIAL | 400 | Keyed | 1.375 (1-3/8") | 0.375 (3/8") | 1-3 Days | $59.99 |
| M40011210DSS | 400 1-3/8BX5/16 : Magnaloy 400 HUB 1-3/8" BORE X 5/16" W/DBL SET SCREW | 400 | Keyed | 1.375 (1-3/8") | 0.3125 (5/16") | 7-10 Days | $47.99 |
| M40011210DSS45 | 400 1-3/8BX5/16 R : Magnaloy 400 HUB 1-3/8" BORE X 5/16" W/DBL SET SCREW AT 45DEGR | 400 | Keyed | 1.375 (1-3/8") | 0.3125 (5/16") | 7-10 Days | $47.99 |
| M40011210C | 400 1-3/8BX5/16K : Magnaloy 400 HUB 1-3/8" BORE X 5/16" KEY W/CLAMP | 400 | Keyed | 1.375 (1-3/8") | 0.3125 (5/16") | 1-3 Days | $75.99 |
| M40011210 | 400 1-3/8BX5/16K : Magnaloy 400 HUB 1-3/8" BORE X 5/16" KEY | 400 | Keyed | 1.375 (1-3/8") | 0.3125 (5/16") | Same Day | $44.99 |
| M400112N | 400 1-3/8BXNOK : Magnaloy 400 HUB 1-3/8" BORE X NO KEY | 400 | Keyed | 1.375 (1-3/8") | NONE | 1-3 Days | $59.99 |
| M40011010S | 400 1-5/16BX5/16K : Magnaloy 400 HUB 1-5/16" BORE X 5/16" KEY SPECIAL | 400 | Keyed | 1.3125 (1-5/16") | 0.3125 (5/16") | 1-3 Days | $59.99 |
| M40012016SDSS | 400 1-5/8BX1/2K : Magnaloy 400 HUB 1-5/8" BORE X 1/2" KEY SPECIAL W/DBL SET SCREW | 400 | Keyed | 1.625 (1-5/8") | 0.5 (1/2") | 7-10 Days | $63.99 |
| M40012016S | 400 1-5/8BX1/2K : Magnaloy 400 HUB 1-5/8" BORE X 1/2" KEY SPECIAL | 400 | Keyed | 1.625 (1-5/8") | 0.5 (1/2") | 1-3 Days | $59.99 |
| M40012008S | 400 1-5/8BX1/4K : Magnaloy 400 HUB 1-5/8" BORE X 1/4" KEY SPECIAL | 400 | Keyed | 1.625 (1-5/8") | 0.25 (1/4") | 1-3 Days | $59.99 |
| M40012012DSS45 | 400 1-5/8BX3/8K : Magnaloy 400 HUB 1-5/8" BORE X 3/8" KEY DBL SET SCREW AT 45DEG | 400 | Keyed | 1.625 (1-5/8") | 0.375 (3/8") | Same Day | $47.99 |
| M40012012DSS | 400 1-5/8BX3/8K : Magnaloy 400 HUB 1-5/8" BORE X 3/8" KEY DBL SET SCREW | 400 | Keyed | 1.625 (1-5/8") | 0.375 (3/8") | Same Day | $47.99 |
| M40012012C | 400 1-5/8BX3/8K : Magnaloy 400 HUB 1-5/8" BORE X 3/8" KEY W/CLAMP | 400 | Keyed | 1.625 (1-5/8") | 0.375 (3/8") | 1-3 Days | $75.99 |
| M40012012 | 400 1-5/8BX3/8K : Magnaloy 400 HUB 1-5/8" BORE X 3/8" KEY | 400 | Keyed | 1.625 (1-5/8") | 0.375 (3/8") | Same Day | $44.99 |
| M40012010S | 400 1-5/8BX5/16K : Magnaloy 400 HUB 1-5/8" BORE X 5/16" KEY SPECIAL | 400 | Keyed | 1.625 (1-5/8") | 0.3125 (5/16") | 1-3 Days | $59.99 |
| M40012014S | 400 1-5/8BX7/16K : Magnaloy 400 HUB 1-5/8" BORE X 7/16" KEY SPECIAL | 400 | Keyed | 1.625 (1-5/8") | 0.4375 (7/16") | 1-3 Days | $59.99 |
| M400120N | 400 1-5/8BXNOK : Magnaloy 400 HUB 1-5/8" BORE X NO KEY | 400 | Keyed | 1.625 (1-5/8") | NONE | 1-3 Days | $59.99 |
| M40011416S | 400 1-7/16BX1/2K : Magnaloy 400 HUB 1-7/16" BORE X 1/2" KEY SPECIAL | 400 | Keyed | 1.4375 (1-7/16") | 0.5 (1/2") | 1-3 Days | $59.99 |
| M40011412DSS | 400 1-7/16BX3/8K : Magnaloy 400 HUB 1-7/16" BORE X 3/8" KEY W/DBL SET SCREW | 400 | Keyed | 1.4375 (1-7/16") | 0.375 (3/8") | 7-10 Days | $47.99 |
| M40011412C | 400 1-7/16BX3/8K : Magnaloy 400 HUB 1-7/16" BORE X 3/8" KEY W/CLAMP | 400 | Keyed | 1.4375 (1-7/16") | 0.375 (3/8") | 1-3 Days | $75.99 |
| M40011412DSS45 | 400 1-7/16BX3/8K : Magnaloy 400 HUB 1-7/16" BORE X 3/8" KEY W/DBL SET SCREW@45DEG | 400 | Keyed | 1.4375 (1-7/16") | 0.375 (3/8") | 7-10 Days | $47.99 |
| M40011412 | 400 1-7/16BX3/8K : Magnaloy 400 HUB 1-7/16" BORE X 3/8" KEY | 400 | Keyed | 1.4375 (1-7/16") | 0.375 (3/8") | 1-3 Days | $44.99 |
| M40011410S | 400 1-7/16BX5/16K : Magnaloy 400 HUB 1-7/16" BORE X 5/16" KEY SPECIAL | 400 | Keyed | 1.4375 (1-7/16") | 0.3125 (5/16") | 1-3 Days | $59.99 |
| M40012816DSS45 | 400 1-7/8BX1/2K : Magnaloy 400 HUB 1-7/8" BORE X 1/2" KEY W/DBL SET SCREW AT 45DEG | 400 | Keyed | 1.875 (1-7/8") | 0.5 (1/2") | 7-10 Days | $47.99 |
| M40012816DSS | 400 1-7/8BX1/2K : Magnaloy 400 HUB 1-7/8" BORE X 1/2" KEY DBL SET SCREW | 400 | Keyed | 1.875 (1-7/8") | 0.5 (1/2") | 7-10 Days | $47.99 |
| M40012816-NYLOC | 400 1-7/8BX1/2K : Magnaloy 400 HUB 1-7/8" BORE X 1/2" KEY W/LIQUID NYLOC ON SET SCREW | 400 | Keyed | 1.875 (1-7/8") | 0.5 (1/2") | 1-3 Days | $46.99 |
| M40012816 | 400 1-7/8BX1/2K : Magnaloy 400 HUB 1-7/8" BORE X 1/2" KEY | 400 | Keyed | 1.875 (1-7/8") | 0.5 (1/2") | 1-3 Days | $44.99 |
| M40012808S | 400 1-7/8BX1/4K : Magnaloy 400 HUB 1-7/8" BORE X 1/4" KEY SPECIAL. | 400 | Keyed | 1.875 (1-7/8") | 0.25 (1/4") | 1-3 Days | $59.99 |
| M40012806S | 400 1-7/8BX3/16K : Magnaloy 400 HUB 1-7/8" BORE X 3/16" KEY SPECIAL. | 400 | Keyed | 1.875 (1-7/8") | 0.1875 (3/16") | 1-3 Days | $59.99 |
| M40012812S | 400 1-7/8BX3/8K : Magnaloy 400 HUB 1-7/8" BORE X 3/8" KEY SPECIAL | 400 | Keyed | 1.875 (1-7/8") | 0.375 (3/8") | 1-3 Days | $59.99 |
| M40012810S | 400 1-7/8BX5/16K : Magnaloy 400 HUB 1-7/8" BORE X 5/16" KEY SPECIAL | 400 | Keyed | 1.875 (1-7/8") | 0.3125 (5/16") | 1-3 Days | $59.99 |
| M40012820S | 400 1-7/8BX5/8K : Magnaloy 400 HUB 1-7/8" BORE X 5/8" KEY SPECIAL | 400 | Keyed | 1.875 (1-7/8") | 0.625 (5/8") | 1-3 Days | $59.99 |
| M40012814S | 400 1-7/8BX7/16K : Magnaloy 400 HUB 1-7/8" BORE X 7/16" KEY SPECIAL | 400 | Keyed | 1.875 (1-7/8") | 0.4375 (7/16") | 1-3 Days | $59.99 |
| M400128N | 400 1-7/8BXNOK : Magnaloy 400 HUB 1-7/8" BORE X NO KEY | 400 | Keyed | 1.875 (1-7/8") | NONE | 1-3 Days | $59.99 |
| M40011812SDSS | 400 1-9/16BX3/8K : Magnaloy 400 HUB 1-9/16" BORE X 3/8" KEY SPECIAL W/DBL SET SCREW | 400 | Keyed | 1.5625 (1-9/16") | 0.375 (3/8") | 7-10 Days | $63.99 |
| M40011812S | 400 1-9/16BX3/8K : Magnaloy 400 HUB 1-9/16" BORE X 3/8" KEY SPECIAL | 400 | Keyed | 1.5625 (1-9/16") | 0.375 (3/8") | 1-3 Days | $59.99 |
| M40001604S | 400 1/2BX1/8K : Magnaloy 400 HUB 1/2" BORE X 1/8" KEY SPECIAL | 400 | Keyed | 0.5 (1/2") | 0.125 (1/8") | 1-3 Days | $59.99 |
| M400016N | 400 1/2BXNOK : Magnaloy 400 HUB 1/2" BORE X NO KEY | 400 | Keyed | 0.5 (1/2") | NONE | 1-3 Days | $59.99 |
| M40002206 | 400 11/16BX3/16 : Magnaloy 400 HUB 11/16" BORE X 3/16 | 400 | Keyed | 0.6875 (11/16") | 0.1875 (3/16") | 1-3 Days | $44.99 |
| M40003008S | 400 15/16BX1/4K : Magnaloy 400 HUB 15/16" BORE X 1/4" KEY SPECIAL | 400 | Keyed | 0.9375 (15/16") | 0.25 (1/4") | 1-3 Days | $59.99 |
| M40003006S | 400 15/16BX3/16K : Magnaloy 400 HUB 15/16" BORE X 3/16" KEY SPECIAL | 400 | Keyed | 0.9375 (15/16") | 0.1875 (3/16") | 1-3 Days | $59.99 |
| M40003010S | 400 15/16BX5/16K : Magnaloy 400 HUB 15/16" BORE X 5/16" KEY SPECIAL | 400 | Keyed | 0.9375 (15/16") | 0.3125 (5/16") | 1-3 Days | $59.99 |
| M400M1505 | 400 15MMBX5MMK : Magnaloy 400 HUB 15MM BORE X 5MM KEY | 400 | Keyed | 15mm | 5mm | 1-3 Days | $59.99 |
| M400M1605DSS45 | 400 16MMBX5MMK : Magnaloy 400 HUB 16MM BORE X 5MM KEY DBL SET SCREW AT 45DEG | 400 | Keyed | 16mm | 5mm | 7-10 Days | $63.99 |
Coupling Options
Double Set Screws or Clamp options are ideal for improved shaft retention. Just add a 'DSS' or 'C' at the end of the part numbers above to add those options.
Standard Style
Double Set Screw Style
Ideal for improved shaft
retention of keyed shafts.
Clamp Style
Ideal for improved shaft
retention of splined shafts.
Spare Parts
Our full range of flexible inserts permit custom design performance for a wide range of applications. All insert materials offer complete electrical insulation, as our factory design eliminates all metal-to-metal contact. Which Coupling Insert you select will vary based on the application, but the series of your Coupling Insert must match the series of the Coupling Halves. For example, a 200 Series Coupling must use a 200 Series Coupling Insert.
Don't see what you need? Give us a call! Special combinations may be available upon request.
Want to view all keyed coupling options? Click HERE for our full collection.