Keyseat Cutters | McMaster-Carr

Use these end mills for general purpose keyseat cutting in a wide range of material, including aluminum, iron, and steel. They mill precise notches in rotary shafts to fit machine keys and can also be used for slot milling.

Carbide Keyseat End Mills

Made of solid carbide, these cutters are harder, stronger, and more wear resistant than high-speed steel and cobalt steel for the longest life and best finish on hard material. They mill precise notches in rotary shafts to fit machine keys and can also be used for slot milling.

Cobalt Steel Keyseat End Mills

With better heat and wear resistance than high-speed steel, these cobalt steel keyseat cutters can run at higher speeds and provide better performance on hard material. They mill precise notches in rotary shafts to fit machine keys and can also be used for slot milling.

Fast-Cutting High-Speed Steel Keyseat End Mills

Use these end mills for general purpose keyseat cutting in a wide range of material, including aluminum, iron, and steel. An alternating right- and left-hand tooth style allows them to remove more material at high speeds than standard keyseat cutters.

Fast-Cutting Carbide Keyseat End Mills

Get speed and longevity when cutting keyseats with these carbide end mills that have staggered teeth.

Broaching

Keyway Broaches

Cut precision keyways.

Keyway Broach Sets

Sets contain combinations of broaches and bushings and include the necessary shims.

Single-Pass Keyway Broaches

Save time by cutting keyways in one pass. These broaches are longer and have thicker teeth than standard broaches, so you won’t need multiple passes or shims.

Keyseat Broaches

Cut precise notches for machine keys in rotary shafts.

Hole Punches

Plier-Action Keyway Punches

Cut keyways at the edges of existing holes. Also known as a keyway nibbler.

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Keyseat End Mills

High-Speed Steel Keyseat End Mills